Solving each system by using substitution. tell whether the system has one solution, infinitely many solutions, or no solution. y=2x-1 2x+2y=22

Y = 2x - 1
2x + 2y = 22
2x + 2(2x - 1) = 22
2x + 4x - 2 = 22
6x - 2 = 22
6x = 24
x = 4
y = 7
one solution

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.