Distribute on the left side 7.4a+22.2=3.2a+43.2 Subtract 3.2a from both sides 4.2a+22.2=43.2 Subtract 22.2 from both sides 4.2a=21 Divide both sides by 4.2 a=5
Solving for X: 1) y=-8x+6.5 y=-4x+11 2) -8x+6.5=-4x+11 3) -8x=-4x+11-6.5 (Subtract 6.5 from both sides) 4) -8x+4x=11-6.5 (Add 4x to both sides) 5)-4x=4.5 5)x=-1.125