Question

galera responde aí pra min. número 6 aí pf

Answer 1

a) 2x - 10 = 8
2x = 8 + 10
2x = 18
x = 18/2
x = 9

b) 1 + 2n = -9
2n = -9 - 1
2n = -10
n = -10/2
n = -5

c) 20x - 13 = 20 + 9x
20x - 9x = 20 + 13
11x = 33
x = 33/11
x = 3

d) 9x - 10 = 3 + 2x
9x - 2x = 3 + 10
7x = 13
x = 13/7

e) 5 (x + 1) = 3 (1 - x) (Aplica a distributiva)
5x + 5 = 3 - 3x
5x + 3x = 3 - 5
8x = -2
x = -2/8
x = -1/4