Question

Resolva as seguintes equações:(U=Q)
a) 2x+2+3x-4=1
b)3(x-1)+2(x+4)=20
c)x-10/9+x/6=10

Answer 1

a) 2x+2+3x-4=1
2x +3x = 1 +4 -2
5x = 5-2
5x = 3
x = 3/5

b)3(x-1)+2(x+4)=20
3x -3 +2x +8 = 20
3x +2x = 20 +3 -8
5x = 23 -8
5x = 15
x= 15/5
x= 3

c)x-10/9+x/6=10     mmc(6,9)= 18

[2.(x-10) + 3x = 180]/18

[2x -20 +3x = 180]/18 elimina denominador 18

2x -20 +3x = 180
2x +3x = 180 +20
5x = 200
x = 200/5
x = 40

Answer 2

A)5x-2=1
5x=1+2
x=3/5

B)3x-3+2x+8=20
5x=20-5
5x=15
X=3

C)2.(x-10)/18+3x/18=180/18
2x-20+3x=180
5x=180+20
X=200/5
X= 40