Question

Resolva as equações:
a)2x + 3 = 7
b)2x + 5 = 11
c)5x + 4 = 24
d)8x = 630 + 3x

Answer 1

Oie, Td Bom?!

a)

2x + 3 = 7

2x = 7 - 3

2x = 4

x = 4/2

x = 2

b)

2x + 5 = 11

2x = 11 - 5

2x = 6

x = 6/2

x = 3

c)

5x + 4 = 24

5x = 24 - 4

5x = 20

x = 20/5

x = 4

d)

8x = 630 + 3x

8x - 3x = 630

5x = 630

x = 630/5

x = 126

Att. Makaveli1996