Question

resolva as seguintes operações

x+3=8-4x

x+11=21-x

x-2x+1=1+5x-12

Answer 1

x + 3= 8 - 4x

x + 4x= 8 - 3

5x= 5

x= 5/5

x= 1

x + 11= 21 - x

x + x= 21 - 11

2x= 10

x= 10/ 2

x= 5

x - 2x + 1= 1 + 5x - 12

x - 2x - 5x= 1 - 12 - 1

- 6x= - 12

x= -12/-6

x= 2

Answer 2

4x+x = 8-3 5x=5 X=5/5 x=1

X+x = 21-11 2x=10 x=10/2 x=5

12+1-1 = 5x+2x-x 12=6x x=12/6 x=2