Question

Resolva as equações:
×-(×+1)=12-(3×-2)
4×+9=3×+5
7(×-1)=2(3×+1)
×+4(×-1)=9-2(×+3)
4(×-2)+3(2×-1)=6(2×-3)
Por favor me ajude-me

Answer 1

x - (x + 1) = 12 - (3x - 2)

x - x - 1 = 12 - 3x + 2
-1 = 14 - 3x
3x = 14 + 1
3x = 15
x = 15/3
x = 5

=========================
4x + 9 = 3x + 5

4x - 3x = 5 - 9
x = -4

=========================
7.(x - 1) = 2.(3x + 1)

7x - 7 = 6x + 2
7x - 6x = 2 + 7
x = 9

===========================
x + 4.(x - 1) = 9 - 2.(x + 3)

x + 4x - 4 = 9 - 2x - 6
5x - 4 = 3 - 2x
5x + 2x = 3 + 4
7x = 7
x = 7/7
x = 1

===========================
4.(x - 2) + 3.(2x - 1) = 6.(2x - 3)

4x - 8 + 6x - 3 = 12x - 18
10x - 11 = 12x - 18
10x - 12x = -18 + 11
-2x = -7 . (-1)
x = 7/2

Answer 2

Vamos a solução das equações.

×-(×+1)=12-(3×-2)
x-x-1=12-3x+2
-1-12-2 = -3x
x = 15/3
x = 5
_________________________________________
4×+9=3×+5
4x-3x=5-9
x= -4
_________________________________________
7(×-1)=2(3×+1)
7x-7 = 6x+2
7x-6x = 2+7
x = 9
_________________________________________
×+4(×-1)=9-2(×+3)
x+4x-4 = 9-2x-6
5x+2x = 3+4
7x = 7
x = 7/7
x = 1
_________________________________________
4(×-2)+3(2×-1)=6(2×-3)
4x-8+6x-3 = 12x-18
10x-12x= -18+11
x = -7/-2
x = 7/2