Question

Resolva cada uma das equações
a) 5x + x =
b) 5x = 14 +6;
c)2x-2=12
d)2x+4=16-3x;
d) ( 4X+5) = 27

Answer 1

Resposta:

a) Problema incompleto

b) 5x=14+6

5x=20

5x:5 = 20:5

x = 4

c) 2x-2=12

2x = 12+2

2x = 14

x = 7

d) 2x+4=16-3x

2x+3x = 16-4

5x = 12

x = 12/5

e)  (4x+5)=27

4x+5=27

4x = 27-5

4x = 22

x = 22/4

x = 11/2