Question

resolva as expressões abaixo
a)9x-2=4x+18
b)3(x+3)-5=22
c)3(x+1)+2=5+2(x-1)
d)4(2x-1)=3(x+2)​

Answer 1

Resposta:

a) 9x-2 = 4x+18

9x-4x = 18+2

5x = 20

x = 20/5

x = 4

b) 3(x+3)-5=22

3×+9-5=22

3x+4=22

3x=22-4

3x=18

x=18/3

x=6

c) 3(x+1)+2=5+2(x-1)

3x+3+2=5+2x-2

3x+5=3+2x

3x-2x=3-5

x=-2

d) 4(2x-1)=3(x+2)

8x-4=3x+6

8x-3x=6+4

5x=10

x=10/5

x=2