Question

La respuesta de
3y+9=81
7x-11=20
12+x=15+3
4x-100=300
2x+1=5+2
11+13x=15
6x+4=28
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Answer 1

Respuesta:

3y + 9 = 81

3y = 81 - 9

3y = 72

y = 72/3

y = 24

7x - 11 = 20

7x = 20 + 11

7x = 21

x = 21/7

x = 3

12 + x = 15 + 3

12 + x = 18

x = 18 - 12

x = 6

4x - 100 = 300

4x = 300 + 100

4x = 400

x = 400/4

x = 100

2x + 1 = 5 + 2

2x + 1 = 7

2x = 7 - 1

2x = 6

x = 6/2

x = 3

-11 + 13x = 15

13x = 15 + 11

13x = 26

x = 26/13

x = 2

6x + 4 = 28

6x = 28 - 4

6x = 24

x = 24/6

x = 4