Question

5x + 2 = 2x -4 *
3
-2
1
-4



3(x + 2) + 5 = x + 12 *
1/2
3
2
1/3



x + 4(x -1) = 9 - 2(x + 3) *
3
2
1
0



5x - ( x- 2) = 2 - 3(x + 5) *
15
7
-15/7
8



2x + 5 = 9 *
2
4
6
-2

PFVRR RESPONDAM O MAIS RÁPIDO POSSÍVEL​

Answer 1

Resposta:

Explicação passo-a-passo:

a) 5x + 2 = 2x - 4

5x - 2x = - 2 - 4

3x = - 6

x = - 2.

b) 3(x + 2) + 5 = x + 12

3x + 6 + 5 = x + 12

3x + 11 = x + 12

3x - x = 12 - 11

2x = 1

x = 1/2.

c) x + 4(x -1) = 9 - 2(x + 3)

x + 4x - 4 = 9 - 2x - 6

5x - 4 = 3 - 2x

5x + 2x = 3 + 4

7x = 7

x = 1.

d)  5x - ( x - 2) = 2 - 3(x + 5)

5x - x + 2 = 2 - 3x - 15

4x + 3x = 2 - 2 - 15

7x = - 15

x = - 15/7.

e) 2x + 5 = 9

2x = 9 - 5

2x = 4

x = 2.