Question

4. Resolvas as equações:

a) 3x – 2 = x + 3 b) z + 4 = 6 – z

c) 4x – 8 = 2x – 3

d) 18x - 43 = 65

Answer 1

Resposta:

3x – 2 = x + 3

3x-x=3+2

2x=5

x=5/2=2.5

x=2.5

b) z + 4 = 6 – z

z+z=6-4

2z=2

z=2/2

z=1

c) 4x – 8 = 2x – 3

4x-2x=-3+8

2x=5

x=5/2=2.5

x=2.5

d) 18x-43=65

18x=65+43

18x=108

x=108/18

x=6

espero ter ajudado e bons estudos