You can put this solution on YOUR website! First, we must remember these rules:
a. when we have a positive sign in front of a parenthesis and a positive number inside the parenthesis, the result is a positive number.
b. when we have a positive sign in front of a parenthesis and a negative number inside the parenthesis, the result is a negative number.
c. when we have a negative sign in front of a parenthesis and a positive number inside the parenthesis, the result is a negative number.
d. when we have a negative sign in front of a parenthesis and a negative number inside the parenthesis, the result is a positive number.
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In summary:
+(+) = +
+(-) = -
-(+) = -
-(-) = +
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So, let's solve your problem:
We can solve all at once by using a calculator, or solve two terms at a time if you don't have a calculator or are not allow to use one during your tests. I'll do the long way here.
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Done!
