Question

a) 6(×-1)=8


b) 7(×-2)=8

c) 4(×-1)=7

d) 3×-(×+2)=10

Answer 1

Calculando.......

A) 6(X-1)=8
6X-6=8
6X=8+6
6X14
X=14/6
X=2,3


B)7(X-2)=8
7X-14=8
7X=14+8
7X=22
X=22/7
X=3,1

C) 4(X-1)=7
4X-4=7
4X=4+7
4X=11
X=11/4
X=2,75

D)3X-(X+2)=10
-3X^2+6X=10
9X+6X=10
15X=10
X=10/15
x=0,6

Answer 2

A) 6(×-1)=8

6x -6 = 8

6x = 8 + 6

6x = 14      x= 14/6    x = 7/3

b) 7(×-2)=8

7x -  14 = 8

7x = 8 + 14

7x = 22

x = 22/7

c) 4(×-1)=7

4x - 4 = 7

4x = 7 + 4

4x = 11      x = 11/4

3×-(×+2)=10

3x - x - 2 = 10

2x - 2 = 10

2x = 10 + 2

2x = 12

x = 12/2

x = 6