Solve the proportion. 4/5=y/7 y=_/_

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.

12+3b -1=-5-b -12-1+5=-b-3b -8=-4b