(-7)+(+4)=-5 (-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. $(-7)+(+4)=-5$<br /> - This expression is incorrect. The correct calculation is $(-7)+(+4)=-3$.<br /><br />2. $(-5)+(+3)=$<br /> - To solve this, we add the two numbers: $(-5)+(+3)=-2$.<br /><br />3. $(+7)+(-9)=$<br /> - To solve this, we subtract 9 from 7: $(+7)+(-9)=-2$.<br /><br />4. $(-7)+(+7)=$<br /> - To solve this, we add the two numbers: $(-7)+(+7)=0$.<br /><br />5. $(+1)+(+4)=$<br /> - To solve this, we add the two numbers: $(+1)+(+4)=5$.<br /><br />6. $(+6)+(-3)=$<br /> - To solve this, we subtract 3 from 6: $(+6)+(-3)=3$.<br /><br />7. $(-9)+(-4)=$<br /> - To solve this, we add the two numbers: $(-9)+(-4)=-13$.<br /><br />So, the correct answers are:<br />1. $(-7)+(+4)=-3$<br />2. $(-5)+(+3)=-2$<br />3. $(+7)+(-9)=-2$<br />4. $(-7)+(+7)=0$<br />5. $(+1)+(+4)=5$<br />6. $(+6)+(-3)=3$<br />7. $(-9)+(-4)=-13$