53
10x+7 = 5x+32 10x-5x = 32-7 5x = 25 x = 5
6-x+12 = 10x+7 6+12-7 = 10x+x 11 = 11x x = 1
If: 10x+7 = 5x+22 Then: 10x-5x = 22-7 And: 5x = 15 So: x = 3
x2 + 10x + 21 = (x + 3)(x + 7)
10x+7=(-3) 10x=(-10) x=(-1)ans
7x = 3 x = 3/7
x=-3
10x + 7 = 4x + 49 6x + 7 = 49 6x = 42 x = 6
X=7 y=5
10*6+8*7 = 116
10x-7=4x+5 +7 +7 10x=4x+12 -4x -4x 6x=12 /6 /6 x=2
15x = -75, x = -5