Question

equação 2x-10=30 b) 8x-1=15 c)6x-21=3

Answer 1

Vamos lá:
a)
2x - 10 = 30
2x = 40
x = 20
Resposta: x = 20

b)
8x - 1 = 15
8x = 16
x = 2
Resposta : x = 2

c)
6x - 21 = 3
6x = 24
x = 4
Resposta: x = 4

Answer 2

a)2x-10=30
2x=30+10
2x=40
x=40/2
x=20

b)8x-1=15
8x=15+1
8x=16
x=16/8
x=2

c) 6x-21=3
6x=3+21
6x=24
x=24/6
x=4