Question

A)3 (4x +7)= 4x -25 B) 5 +3x= 4- x

C) 2x +1 -7x +1= -2 +1 +7x

D)6 +3 (3x -5 +7x)= (2x-1)

Answer 1

A)

3 ( 4x +7) = 4x-25

12x+21=4x-25

12x - 4x = -25 -21

8x = - 46

x= -23 / 4

B)

5+ 3x = 4-x

3x + x = 4-5

4x =-1

x = -1/4

C)

2x +1 -7x +1= -2 +1 +7x  

-5x = -1-2 +7x

3 = 12x

1/4 =x

D)

6 +3 (3x -5 +7x)= (2x-1)

6+9x-15+21x = 2x-1

30x - 2x = -1 - 6 +15

28x = 8

x = 2/ 7