Question

Solve the system by substitution.
–9x + 2y = 228
-7x – 1= y

Answer 1

25.33 or 25.3

Explanation:

first move 9x over like this 2y=9x+228 then to get y alone you have to divide each number by 2 so 2y/2=9x/2+228/2

so then you have y=4.5x+114 so then of course divide 114 by 4.5 then you have 25.33