X+3y=18 3x +9y=12 parallel, perpendicular or coinciding

6y6=−1716(Divide both sides by 6)y=−572Step: Substitute−572foryinx=−3y+183:x=−3y+183x=−3(−572)+183x=5372(Simplify both sides of the equation)x=537/2 and y=−57/2

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.