Question

1. 3 | 4 + 2x | = -9
2. 2 | 3x + 1 | + |7| = 13
3. 7 + 2 | 3x + 1 | = 3

Answer 1

1. 3(4+2x) = -9d

= 4+2x = -3 (-9 ÷ 3)

= 2x = -3-4

=2x = 7

x = 7/2

2. 2(3x+1) + (7) = 13

=(3x+1) = 13-7 /2

=(3x+1) =6/2 =3

3x = 3-1

x = 2/3

3. 7+2 (3x) = 2

= 9(3x) = 2

= 3x = 2/9

= x = 2/9/3

= x = 2/27