Question

resolva as equações
a)5x-3+x=2x+9

b)17x-7x=x+18

c)x+-4=17-2x+1

D)x+2x+3-5x=4x-9

e) 5x+6x-16=3x+2x-4​

Answer 1

Resposta:

a)5x-3+x=2x+9

5x +x - 2x = 9 + 3

6x - 2x = 12

4x = 12

x = 12/4

12÷4 = 3

X = 3

b)17x-7x=x+18

10x = x + 18

10x - x = 18

9x = 18

x = 18/9

18 ÷ 9 = 2

X = 2

c)x+-4=17-2x+1

x + 2x = 17 + 1 +4

3x = 22

x = 22/3

22 ÷ 3 = 7,3333333333

X = 7,3333333333

D)x+2x+3-5x=4x-9

x + 2x - 5x - 4x = -9 -3

- 6x = -12

x = -12/ -6

- 12 ÷ -6 = 2

X= 2

e) 5x+6x-16=3x+2x-4

5x + 6x - 3x - 2x = -4 +16

6x = 12

x = 12/6

12 ÷ 6 = 2

X = 2

Espero ter ajudado!!!

Bons estudos :)