Question

6) Resolva as equações:
a) 8x = 32
b) 5x + 4 = 2x + 10 c) 12x - 48 = 0
d) 2(x + 3) = 3x + 3(2x-1) e) 6(x - 2) = 2(x - 3) + 2​

Answer 1

Bora lá:

a) 8x=32

x=32/8 (basta dividir)

x=4

b) 5x+4=2x+10

5x-2x=10-4

3x=6

x=6/3

x=2

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

2x+6=3x+6x-3

2x-9x=-3-6

-7x=9(.-1)

x=9/7

x=1,28

d)6(x-2)= 2(x-3)+2

6x-12=2x-6+2

6x-2x=6+2-12

4x=-4

x= -4/4

x= -1