Question

III. Indique a incógnita de cada equação:
a) 2X – 3 = 15 c) 5Z – 6 = Z + 14
b) 4Y = 30 – 18 d) X – 1 + 12 = 7X
c) 5Z – 6 = Z + 14
d) X – 1 + 12 = 7X

Answer 1

Resposta:

a) 2x - 3 = 15

2x = 15 - 3

2x = 12

x = 12/2 (12 dividido por 2)

x = 6

b) 4y = 30 - 18

4y = 12

y = 12/4

y = 3

c) 5z - 6 = z + 14

5z - z = 14 + 6

4z = 20

z = 20/4

z = 5

d) x - 1 + 12 = 7x

x + 11 = 7x

x - 7x = -11

-6x = -11

x = 11/6