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)3(3X-1)=2(3X+2)

9x-3=6x+4

9x-6x=4+3

3x=7

x= 7/3

b)7(X-2)=5(X+3)

7x-14=5x+15

7x-5x=14+15

2x=29

x=29/2

c)3(2X-1)=-2(X=3)

6x-3= -2x-6

6x+2x= -6+3

8x= -3

x= -3/8

d)5X-3(X+2)=15

5x-3x-6=15

2x=15+6

x=21/2