Question

( h ) 7 (×-2)= 3 (×+3)

( i ) 3 (2×-1) = -2 (×+3)

( j ) 5× -3 (×+2) =15

Answer 1

Resposta:

h. x = 5,75

i. x = -0,375

j. x = 10,5

Explicação passo-a-passo:

( h ) 7 (×-2)= 3 (×+3)

7x -14 = 3x +9

7x -3x = 9 +14

4x = 23

x = 23/4

x = 5,75

( i ) 3 (2×-1) = -2 (×+3)

6x -3 = -2x -6

6x +2x = -6 +3

8x = -3

x = -3/8

x = -0,375

( j ) 5× -3 (×+2) =15

5x -3x -6 = 15

2x = 15 + 6

2x = 21

x = 21/2

x = 10,5