Question

Resolva as seguintes equações:

1) 4m - 1 = 7
2) 3m - 9 = 11
3) 3x + 2 = 4x + 9
4) 5m - 2 + 12 = 6m + 4
5) 2b - 6 = 15
6) 2m - 4 + 12 = 3m - 4 +2
7) 4m - 7 = 2m - 8
8) 6m - 4 = 12 - 9m
9) m + 4 - 3m = 4 + 12m
10) 3 + 4m - 9 = 6m - 4 + 12
11) - 5 + 3x + 4 - 12 + 9x
12) 3x + 5 - 2 = 2x + 12
13) 3 ( x + 2 ) = 15
14) - 2m ( - m + 2 ) = 3 ( 2m + 1)
15) 12m +3 ( m - 1 ) = - 2 ( m + 1 ) + 12
16) 2 ( x - 1 ) = 0
17) - 3 ( m + 2 ) = 1
18) 2 ( x + 2 ) = 12
19) m = - 3 ( m - 4 )
20) 2 ( m + 5 ) = - 3 ( m - 5 )
21) - 2 ( y + 4 ) = - 7 + 9 ( y - 1 )
22) 5 ( x - 4 ) = - 4 + 9 ( x - 1 )
23) - 5 ( x - 4 ) + 4 = 2 ( - 2x - 2 ) + 9
24) - 2 ( m - 5 ) + 3m = - ( m + 2 ) - 7
25) - ( x + 5 ) - 6 = - 9 ( x - 3 ) - 2
26 ) x - 7 + 2 ( x - 4 ) = - 3 ( x + 2 ) - 8

Answer 1

A) 4M-1=7

4M = 7 +1

M = 8/4

M = 2

 

B)3M-9=11

3M = 11 + 9

M = 20/3

 

C)3X+2+4X+9

7X + 11

 

D)5M-2+12=6M+4

5M +10 = 6M + 4

10 - 4 = 6M - 5M

M = 6

 

E)2B-6=15

2B = 15 + 6

B = 21/2

 

F)2M-4+12=3M-4+2

2M + 8 = 3M - 2

8 + 2 = 3M - 2M

M = 10

 

G)4M-7=2M-8

4M - 2M = -8 + 7

2M = -1

M = -1/2

 

H)6M-4=12-9M

6M + 9M = 12 + 4

15M = 16

M = 16/15