Question

Recava as equaces a segurs encore o valor de

a) x+4=7
b) x+2=5
c) 2x-7=9
d)240-2x=160​

Answer 1

Explicação passo-a-passo:

a)

x + 4 = 7

x = 7 - 4

x = 3

b)

x + 2 = 5

x = 5 - 2

x = 3

c)

2x - 7 = 9

2x = 9 + 7

2x = 16

x = 16/2

x = 8

d)

240 - 2x = 160

2x = 240 - 160

2x = 80

x = 80/2

x = 40