INTER Solve the following mixed or order of operations) 1) (-72)div 8times 3+(-15)= 3) 8-(-30)div (-5)times (-3)= 5) (-25)times (-3)div (-5)-(-90)= 7) (-20)div (-5)+9times 2= 9) (-42)div 3times (-2)+2= 11) (-20)times (-3)div (-5)-(-10) 13) (-40)div (-8)+3times 11= 15) (-68)div 2times (-5)+12= 17) 1-(-9)div (-3)times (-8)= 19) (-15)div 3times 9+(-50)=

Let's solve each of the given expressions step by step, following the order of operations (PEMDAS/BODMAS):<br /><br />1) \((-72) \div 8 \times 3 + (-15)\)<br /> - First, perform the division: \((-72) \div 8 = -9\)<br /> - Then, perform the multiplication: \(-9 \times 3 = -27\)<br /> - Finally, perform the addition: \(-27 + (-15) = -42\)<br /><br />3) \(8 - (-30) \div (-5) \times (-3)\)<br /> - First, perform the division: \((-30) \div (-5) = 6\)<br /> - Then, perform the multiplication: \(6 \times (-3) = -18\)<br /> - Finally, perform the subtraction: \(8 - (-18) = 8 + 18 = 26\)<br /><br />5) \((-25) \times (-3) \div (-5) - (-90)\)<br /> - First, perform the multiplication: \((-25) \times (-3) = 75\)<br /> - Then, perform the division: \(75 \div (-5) = -15\)<br /> - Finally, perform the subtraction: \(-15 - (-90) = -15 + 90 = 75\)<br /><br />7) \((-20) \div (-5) + 9 \times 2\)<br /> - First, perform the division: \((-20) \div (-5) = 4\)<br /> - Then, perform the multiplication: \(9 \times 2 = 18\)<br /> - Finally, perform the addition: \(4 + 18 = 22\)<br /><br />9) \((-42) \div 3 \times (-2) + 2\)<br /> - First, perform the division: \((-42) \div 3 = -14\)<br /> - Then, perform the multiplication: \(-14 \times (-2) = 28\)<br /> - Finally, perform the addition: \(28 + 2 = 30\)<br /><br />11) \((-20) \times (-3) \div (-5) - (-10)\)<br /> - First, perform the multiplication: \((-20) \times (-3) = 60\)<br /> - Then, perform the division: \(60 \div (-5) = -12\)<br /> - Finally, perform the subtraction: \(-12 - (-10) = -12 + 10 = -2\)<br /><br />13) \((-40) \div (-8) + 3 \times 11\)<br /> - First, perform the division: \((-40) \div (-8) = 5\)<br /> - Then, perform the multiplication: \(3 \times 11 = 33\)<br /> - Finally, perform the addition: \(5 + 33 = 38\)<br /><br />15) \((-68) \div 2 \times (-5) + 12\)<br /> - First, perform the division: \((-68) \div 2 = -34\)<br /> - Then, perform the multiplication: \(-34 \times (-5) = 170\)<br /> - Finally, perform the addition: \(170 + 12 = 182\)<br /><br />17) \(1 - (-9) \div (-3) \times (-8)\)<br /> - First, perform the division: \((-9) \div (-3) = 3\)<br /> - Then, perform the multiplication: \(3 \times (-8) = -24\)<br /> - Finally, perform the subtraction: \(1 - (-24) = 1 + 24 = 25\)<br /><br />19) \((-15) \div 3 \times 9 + (-50)\)<br /> - First, perform the division: \((-15) \div 3 = -5\)<br /> - Then, perform the multiplication: \(-5 \times 9 = -45\)<br /> - Finally, perform the addition: \(-45 + (-50) = -95\)<br /><br />So, the answers are:<br />1) \(-42\)<br />3) \(26\)<br />5) \(75\)<br />7) \(22\)<br />9) \(30\)<br />11) \(-2\)<br />13) \(38\)<br />15) \(182\)<br />17) \(25\)<br />19) \(-95\)