Question

respuestas. con resolucion

Answer 1

1.
x/3 - 6 = 10
x - 18 = 30
x = 30 + 18
x = 48

2.
x/4 - 5 = 6
x - 20 = 24
x = 24 + 20
x = 44

3.
n + (n + 1) + (n + 2) = 93
n + n + 1 + n + 2 = 93
3n + 3 = 93
3n = 93 - 3
3n = 90
n = 90/3
n = 30

4.
x/3 + x/4 = 84
4x + 3x = 1008
7x = 1008
x = 1008/7
x = 144

5.
x/2 + x/3 = 90
3x + 2x = 540
5x = 540
x = 540/5
x = 108

6.
x+2/5 = 1400
x + 2 = 7000
x = 7000 - 2
x = 6998

7.
x+2/3 = 180
x + 2 = 540
x = 540 - 2
x = 538

8.
3x + 20 = 5x - 10
3x - 5x = - 10 - 20
- 2x = - 30
x = 30 / 2
x = 15

9.
4x - 7 = 3x + 3
4x - 3x = 3 + 7
x = 10

10.
x/3 - 7 = 10
x - 21 = 30
x = 30 + 21
x = 51

11.
2x = y
x + 50 = y - 50

x = y/2
x + 50 = y - 50

y/2 + 50 = y - 50
y + 100 = 2y - 100
y - 2y = - 100 - 100
- y = - 200
y = 200

x + 50 = 200 - 50
x = 100

carlos tiene 200
raul tiene 1000

12.
x/3 + x/4 = 77
4x + 3x = 924
7x = 924
x = 924/7
x = 132

13.
x+2/3 = 144
x + 2 = 432
x = 432 - 2
x = 430