adding the equations (to cancel y) ... 3 x = 4 ... x = 4/3
4/3 + y = 1 ... y = -1/3
8 x - 7 y = 8(4/3) - 7(-1/3) = 32/3 + 7/3 = ?
If
2x - y = 3
x + y = 1
compute 8x - 7y.
Please help!
1 answer
2x - y = 3
x + y = 1
compute 8x - 7y.
Please help!
1 answer