Question

A)8(2x-1)=6(5x-2)-10 B)3(y-1)-4(y-2)=6 C)2(5y+1)=27 D)2(x-1) 5x-3(2x-4) E)6(x+3)-2(x-5)=20 F)2(x-7)-4(5-x)=2

Answer 1

a.

8(2x-1)=6(5x-2)-10

16x-8=30x-12-10

16x-30x=-12-10+8

-14x=-14

x=-14/-14

x=1

b.

3(y-1)-4(y-2)=6

3y-3-4y+8=6

3y-4y=6+3-8

-1y=1

y=1/-1

y=-1

c.

2(5y+1)=27

10y+2=27

10y=27-2

10y=25

y=25/10

y=2,5

d.

2(x-1)=5x-3(2x-4)

2x-2=5x-6x+12

2x-5x+6x=12+2

3x=14

x=14/3

e.

6(x+3)-2(x-5)=20

6x+18-2x+10=20

6x-2x=20-18-10

4x=-8

x=-8/4

x=-2

f.

2(x-7)-4(5-x)=2

2x-14-20+4x=2

2x+4x=2+14+20

6x=36

x=36/6

x=6