Question

a)7(x-2)=5(×+3) b)2(x-5)+4(×-1)=10 c)3(2x-1)=-2(x+3) d)7(x-1)-2(×-5)=×-5

Answer 1

Olá, bom dia ☺

Resoluções:

a)

7(x-2)=5(×+3)
7x - 14=5x + 15.
7x - 5x= 15 + 14.
2x=29.
x=29/2.

b)

2(x-5)+4(×-1)=10
2x - 10 +4x - 4 = 10.
2x + 4x= 10+ 10 + 4.
6x=24.
x=24/6.
x=4.

c)

3(2x-1)=-2(x+3)
6x - 3 = -2x - 6.
6x + 2x= -6 + 3.
8x= -3.
x= -3/8.

d)

7(x-1)-2(x-5)=x-5
7x - 7 -2x +10 = x - 5.
7x - 2x -x = -5 +7 - 10.
4x=-8.
x=-8/4.
x=-2.

Bons estudos :)

Answer 2

a) 7x-14=5x+15
7x-5x=15+14
2x=29
x=14,5

b)2x-10+4x-4=10
6x=10+10+4
6x=24
x=4

c) 6x-3=-2x-9
8x= -6
x=3/4

d) 7x-7-2x+10=x-5
4x=12
x=3