Solve system by method of elimination
0.07x + 0.02y =-0.07
0.08x - 0.06y = 0.07
.21x + .06y = -.21
.08x - .06y = .07
add the equations to eliminate y:
.29x = -.14
...
0.07x + 0.02y =-0.07
0.08x - 0.06y = 0.07
.08x - .06y = .07
add the equations to eliminate y:
.29x = -.14
...