(+9)+(+1)=-4 (-7)+(+4)= (-5)+(+3)= (+7)+(-9)= (-7)+(+7)= (+1)+(+4)= (+6)+(-3)= (-9)+(-4)=

Let's solve each of the given expressions step by step:<br /><br />1. $(+9)+(+1)=-4$<br /> - This expression is incorrect. The correct calculation is $(+9)+(+1) = +10$.<br /><br />2. $(-7)+(+4)$<br /> - To solve this, we add the numbers considering their signs:<br /> $(-7)+(+4) = -3$<br /><br />3. $(-5)+(+3)$<br /> - To solve this, we add the numbers considering their signs:<br /> $(-5)+(+3) = -2$<br /><br />4. $(+7)+(-9)$<br /> - To solve this, we add the numbers considering their signs:<br /> $(+7)+(-9) = -2$<br /><br />5. $(-7)+(+7)$<br /> - To solve this, we add the numbers considering their signs:<br /> $(-7)+(+7) = 0$<br /><br />6. $(+1)+(+4)$<br /> - To solve this, we add the numbers considering their signs:<br /> $(+1)+(+4) = +5$<br /><br />7. $(+6)+(-3)$<br /> - To solve this, we add the numbers considering their signs:<br /> $(+6)+(-3) = +3$<br /><br />8. $(-9)+(-4)$<br /> - To solve this, we add the numbers considering their signs:<br /> $(-9)+(-4) = -13$<br /><br />So, the correct answers are:<br />1. $(+9)+(+1) = +10$<br />2. $(-7)+(+4) = -3$<br />3. $(-5)+(+3) = -2$<br />4. $(+7)+(-9) = -2$<br />5. $(-7)+(+7) = 0$<br />6. $(+1)+(+4) = +5$<br />7. $(+6)+(-3) = +3$<br />8. $(-9)+(-4) = -13$