Question

quais as respostas desses problemas

M+4-3M=4+12M

3+4M-9=6M-4+12

-5+3X+4-12+9X

3X+5-2=2X+12

3 (X+2}=15

Answer 1

M+4-3M=4+12M

m - 3m - 12m = 4 - 4

m - 15m = 0

14m = 0

m = 0/14

m = 0

3+4M-9=6M-4+12

4m - 6m = -4 + 12 - 3 + 9

-2m = - 7 + 21

-2m = 14

m = 14 / -2

m = -7

-5+3X+4-12+9X = 0

12x - 17 + 4 = 0

12x -13 = 0

12x = 13

x = 13/12

3X+5-2=2X+12

3x - 2x = 12 - 5 + 2

x = 9

3 (X+2}=15

3x + 6 = 15

3x = 15 - 6

3x = 9

x = 9/3

x = 3