Question

Me ajudem por faaavooorr!!! ​

Answer 1

Resposta:

A) 5x + 15 = 3 ( x - 10) 6

5x + 15 = 18 (x - 10)

5x + 15 = 18x - 180

5x - 18x = -180 -15

-13x = -195 (-1)

x= 15✓

B) 3x -7 = 4 (x + 8) -4

3x - 7= 4 + 32 - 4

3x - 7= 4x + 28

3x - 4x= 28 + 7

-x= 35

x= -35✓

C) 6x - 4= 5 ( x - 2) + 4

6x - 4= 5x - 10 + 4

6x - 4= 5x -6

6x - 5x= -6 +4

x= -2✓

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

2x +10= 3x -7

2x - 3x= -7 -10

-x= -17 (-1)

x= 17✓

E) 4 ( x+3) -2= 6x +4

4x +12 -2= 6x +4

4x +10= 6x +4

4x -6x= +4 -10

-2x= -6 (-1)

x= 3✓

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

3x - 21 -5 = 2x + 6

3x - 26 = 2x + 6

3x - 2x= 6 +26

x=32✓