Question

urgent ejjejejejrjjrjrbrb​

Answer 1

Salut,

a) 5x + 9 + 3(2x - 1) = 2x + 24

5x + 9 + 6x - 3 = 2x + 24

11x + 6 = 2x + 24

11x - 2x = 24 - 6

9x = 18

x = 18 : 9 = 2

c) 4x + 7 + 5(x + 3) = 2x + 1

4x + 7 + 5x + 15 = 2x + 1

9x + 22 = 2x + 1

9x - 2x = 1 - 22

7x = - 21

x = - 21 : 7 = - 3

e) 3x + 9 + 2(3 + x) = 4 + 2(x + 5)

3x + 9 + 6 + 2x = 4 + 2x + 10

x + 15 = 14 + 2x

x - 2x = 14 - 15

- x = - 1

x = 1

g) 5(2x - 3) + 3(5x - 6) + 13 = 8(3x + 7) - 63

10x - 15 + 15x - 18 + 13 = 24x + 56 - 63

25x - 20 = 24x - 7

25x - 24x = - 7 + 20

x = 13

h) 7(4x - 3) - 4(3x + 8) + 25 = 3(4x + 9) - 43

28x - 21 - 12x - 32 + 25 = 12x + 27 - 43

16x - 28 = 12x - 16

16x - 12x = - 16 + 28

4x = 12

x = 12 : 4 = 3

i) 3(4x - 5) - 3(2x + 7) + 32 = 2(2x + 1) - 14

12x - 15 - 6x - 21 + 32 = 4x + 2 - 14

6x - 4 = 4x - 12

6x - 4x = - 12 + 4

2x = - 8

x = - 8 : 2 = - 4

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

6x + 18 - 3x - 3 + 5 = - 3x - 4x - 10

6x + 18 - 3 + 5 = - 4x - 10

6x + 20 = - 4x - 10

6x + 4x = - 10 - 20

10x = - 30

x = - 30 : 10 = - 3