algebra
posted by Christina .
Solve by using the elimination method.
7x8y=20
8x+7y=74

7x8y=20
8x+7y=74
Multiply the first equation by 7 and the second equation by 8.
49x 56y = 140
64x + 56y = 592
Now add the last two equations to eliminate y.
113 x = 452
X = 4
Now solve for y.