Answer:
Z=+7
Step-by-step explanation:
To solve this question
Z÷(-7)=-1
For clear understanding
I will like to rewrite the equation as
z/-7=-1
Hope you understand...it still means the same thing so let's solve
Cross multiply
z=+7
Waoh....see how simple it is
The main reason why I have to rewrite the equation is for better understanding and to make the work easier
I believe this will help you to understand it better
A. 7
z ÷ (–7) = –1.
multiply each side by -7
z ÷ (–7)*-7 = –1.*-7
z = 7
3a-3(a+2)=10
3a-3a-6=10
+3 +3
6a-6=10
+6 +6
6a=16
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