Question

Resolva as equações do 1° grau

a) 3 (3 x - 1) = 2 (3 x + 2)
b) 7 (x - 2) = 5 (x + 3)
c) 3 (2 x - 1) = 2 ( x + 3)
d) 5 x - 3 (x + 2) = 15

Answer 1

Resposta:

a)x = 7/3

b)x= 29/2

c)x=9/4

d)x =21/2

Explicação passo a passo:

a) 3(3x-1) = 2(3x+2)

9x - 3 = 6x + 4

9x-6x=4+3

3x = 7

x = 7/3

b) 7x-14 = 5x+15

7x-5x = 15+14

2x = 29

x= 29/2

c) 6x-3 = 2x+6

6x-2x = 6+3

4x = 9

x=9/4

d) 5x-3x-6=15

2x = 15+6

2x = 21

x =21/2