Question

Me ajudem com essas equações porfavor
3(x-2)=4(3-x)
4a-7=8a-2
3/0x=12
121=3x
6m=2m+16
2k+1=4K-7
9b+9+3b=25

Answer 1

3 ( x - 2 ) = 4 ( 3 - x )
3x - 6 = 12 - 4x
3x + 4x = 12 + 6
7x = 18
x = 18 / 7

4a - 7 = 8a - 2
4a - 8a = - 2 + 7
- 4a = 5
a = 5 / - 4

3/0x = 12
3x = 12 * 0
3x = 12
x = 12 / 3
x = 4

121 = 3x
3x = 121
x = 121 / 3
x = 40,333...

6m = 2m + 16
6m - 2m = 16
4m = 16
m = 16 / 4
m = 4

2k + 1 = 4k - 7
2k - 4k = - 7 - 1
- 2k = - 8
k = - 8 / - 2
k = 4

9b + 9 + 3b = 25
9b + 3b = 25 - 9
12b = 16
b = 16 / 12
b = 1,333...

Espero ter ajudado e bons estudos!!!

Answer 2

3(x-2)=4(3-x)
3x-6=12-4x
3x+4x=12+6
7x=18
x=18/7
4a-7=8a-2
4a-8a=-2+7
-4a=5.(-1)
4a=-5
a=-5/4
a=-1,25
3/0x=12
0x=12.3
0x=36
x=36/0
x=0
121=3x
121/3=x
x=40,33
6m=2m+16
6m-2m=16
4m=16
m=16/4
m=4
2k+1=4k+7
2k-4k=7-1
-2k=6.(-1)
2k=-6
k=-6/2
k=-3
9b+9+3b=25
9b+3b=25-9
12b=16
b=16/12 (:4)
b=4/3