Question

encontre um valor de x nas equaçoes abaixo r)4x-4=3x-1 s)6x+14-5x-1=51-18x t)5x-15-20+8x=3 u)12-4x+10x-15=5x-40 v)8x+82-12=12 w)18x-30=5 x)x+8=10 y)3x-2+2=10 z)5x+9=120 alguem sabe??

Answer 1

Olá

r) 4x - 4 = 3x - 1

4x - 3x = 4 - 1

x = 3

s) 6x + 14 - 5x - 1 = 51 - 18x

6x - 5x + 18x = 51 + 1 -14

19x = 38

x = 38/19 ÷ 19

x = 2

t) 5x - 15 - 20 + 8x = 3

5x + 8x = 3 + 20 + 15

13x = 38

x = 38/13

u) 12 - 4x + 10x - 15 = 5x - 40

-4x + 10x - 5x = - 40 + 15 - 12

x = - 37

v) 8x + 82 - 12 = 12

8x = 12 + 12 - 82

8x = -58

x = 58/8 ÷ 2

x = 29/4

w) 18x - 30 = 5

18x = 5 + 30

18 x = 35

x = 35/18

x) x + 8 = 10

x = 10 - 8

x = 2

y) 3x - 2 + 2 = 10

3x = 10 + 2 - 2

3x = 10

x = 10/3

z) 5x + 9 = 120

5x = 120 - 9

5x = 111

x = 111/5

Espero ter ajudado