the answer is going to be b
-2(7-15) / 4
-2(-8) = 16
16/4 = 4
Answer is 4
Step-by-step explanation:
You're asking why
let's transpose the first equation for y
-2x-6y=18
-6y=18+2x
6y=-18-2x
y=-18/6-2x/6
y=-3-⅓x as required
Answer:
it's 400
just do it like this I guess 5 × 8 × 10