Question

Determine o valor de x conforme expressões numéricas abaixo

Answer 1

a) 2x+4x+4=40

6x=40-4

6x=36

x=36/6

x=6

b) 2.(10-2.4) = x

2.(10-8) = x

2.2 = x

x = 4

c) 3x + 5x + 6x + 9x - 7x = 14x

d) {8+[2.(15-3.4)+10]/2}.10 =

{8+[2.(15-12)+10]/2}.10 =

{8+[2.3+10]/2}.10

{8+[6+10]/2}.10

{8+[16]/2}.10

{8+8}.10

16.10

160