Question

1) 2x+10=15+20
2) 5x+100=x+140
3) x+81=199
4) x+2x+10=70
5) 2x-50=80+x
6) 4x+5=25

Answer 1

Resposta:

1) 12,5

2) 10

3) 118

4) 20

5) 10

6) 5

Explicação passo-a-passo:

1) 2x+10=15+20

2x = 15 + 20 - 10

2x= 25

X = 25/2

X = 12,5

2) 5x+100=x+140

5x - X = 140 - 100

4x = 40

X = 40/4

X = 10

3) x+81=199

X = 199 - 81

X = 118

4) x+2x+10=70

X + 2x = 70 - 10

3x = 60

X= 60/3

X= 20

5) 2x - 50= 80 + X

2x + X = 80 - 50

3x = 30

X = 30/3

X = 10

6) 4x +5= 25

4x = 25 - 5

4x= 20

X = 20/ 4

x= 5