1
28=8x+12-7x 28=8x-7x+12 28=x+12 28-12=x+12-12 16=x
3(7x + 11)
7x + 28
3x - 7 + 4x = 28 7x - 7 = 28 I added 4x and 3x to get 7x 7x = 35 I subtracted 7 from both sides x = 5 I divided by 7 on both sides
(3b + 7x)(3b + 7x) or (3b + 7x)2
7x + 7 = 7(x + 1)
1
7x + 8 = 36 - 8 = - 8 -------------- 7x = 28 7x/7 = 28/7 x = 4
You would factor 2x2 + 7x + 6 into (2x + 3) (x+2)
7x+5-14 = 28 7x = 28+14-5 7x = 37 x = 37/7 = 5.'285714' recurring
x2 + 7x + 6 = (x + 6) (x + 1)
7x(3x3 - 2x2 + 5x + 1)
7x + 8 = 36 Therefore, 7x = 28 x = 28/7 x = 4
23 = 7x + 7x - 5 = 14x - 5 14x = 23 + 5 = 28 x = 28/14 = 2
28=8x+12-7x 28=8x-7x+12 28=x+12 28-12=x+12-12 16=x
49x2+28x+4 = (7x+2)(7x+2) when factored