Question

Alguém pode me ajudar com essas perguntas ?

x+2x=33 ?
2x=x+6
x-9=81
3x+1=10
3x=9
6x=42
27-x=4x+1
11x=121
256=16x
x=5+9
2x-x=18
x+x+x=9
4x-2x=18
x-x+2x=124

Answer 1

x+2x=33
3x = 33
x = 33 ÷ 3
x = 11

2x = x+6
2x - x = 6
x = 6

x - 9 = 81
x = 81 + 9
x = 90

3x + 1 =10
3x = 10 - 1
3x = 9
x = 9 ÷ 3
x = 3

3x = 9
x = 9÷3
x = 3

6x = 42
x = 42 ÷ 6
x = 7

27 - x = 4x + 1
-x -4x = 1 - 27
-5x = -26
x = ²⁶/₅

11x = 121
x = 121 ÷ 11
x = 11

256 = 16x
x = 256 ÷ 16
x = 16

x = 5+9
x = 14

2x - x = 18
3x = 18
x = 18 ÷ 3
x = 6

x + x + x = 9
3x = 9
x = 9 ÷ 3
x = 3

4x - 2x = 18
6x = 18
x = 18 ÷ 6
x = 3

x - x + 2x = 124 
2x = 124
x = 124 ÷ 2
x = 62