x = 4
3x + 7 = -4x + 28 implies 7x + 7 = 28
-3x=-21+4x-3x-4x=-21+4x-4x-7x=-217x=217x/7=21/7x=3
7y+3x-21 =0 7y = -3x+21 y = -3/7x+3 The y intercept is 3
5x+7=3x-21 -7= -7 5x=3x-14 -3x=-3x 2x=-14 2x/2x=2x/-14 x=-7 The Answer Is -7 -
x = 4
3x + 7 = -4x + 28 implies 7x + 7 = 28
-3x=-21+4x-3x-4x=-21+4x-4x-7x=-217x=217x/7=21/7x=3
2y+3x=21 is y=-(3/2)x+(21/2) which is y=-1.5x+10.5
3
x = 2, y = 3
7y+3x-21 =0 7y = -3x+21 y = -3/7x+3 The y intercept is 3
no
5x+7=3x-21 -7= -7 5x=3x-14 -3x=-3x 2x=-14 2x/2x=2x/-14 x=-7 The Answer Is -7 -
= 53 9x3 + 9x2 + 5x1+ 3x1 27 + 18 + 5 + 3
3x + 2 = 3x + 6 This is not possible.
x = 15 as 4*15+6 = 66 3*15+21 = 66 or an easier way to do it 4x - 3x = 1x 21 - 6 = 15 1x = 15