It is c because when you simply that that's the answer of the fraction
well it would be 8b - 20 because you have to multuply by 4 on 5 too not just 2b
All you have to do is just put the same variable on the same side as each other.
The answer is D :)
-4(-1)+2
4+2=
8
Hope this helpeddd
You can add the two equations together, this way you get:
5x = 25
You divide by 5:
x = 5
Now you just have to use this number in one of the original equations to get y:
x - 7y = -16
5 - 7y = -16 /subtract 5
-7y = -21 /divide by 7
-y = -3 /multiply with -1
y = 3
