Question

solve by elimination or substitution 2x-4y=18 and 3x+5y=-3

Answer 1

2x - 18 = 4y ---> y = (2x-18)/4
3x + 5y = -3 ---> y = (-3 - 3x)/5

y = y

5(2x - 18) = 4(-3 - 3x)
10x - 90 = -12 - 12x
10x + 12x = -12 + 90
22x = 78
x = 39/11

Answer 2

y = -30/11

Answer 3

you find y by plugging the x value back into one of the original equations

Answer 4

thank you

Answer 5

yw :D

Answer 6

how did you go from 22x = 78
to x = 39/11

Answer 7

x = 78/22
x = 39/11 reduction by 2

Answer 8

oh, wow. great