Question

7x+ 4 =4 ????????? 10x - 3 = 1 ???????? 3.(2x+5) = 39 ??????? 4x - 8 - 6 + 6x = 4x -16 ??????????

Answer 1

resposta

7x+ 4 =4

7x=4-4

7x=0

x=0/7

0

10x - 3 = 1

10x=1+3

10x=4

x=4/10

x=2/5

3.(2x+5) = 39

6x+15=39

6x= 39-15

6x=24

x=24/6

x=4

4x - 8 - 6 + 6x = 4x -16

4x+6x-4x=-16+8+6

6x=30

x=30/6

x=5