Question

(1)5a+(2-4a)=0 (2) 25b-(b-5)=29 (3) 7x+2(3x-3)=20 (4)8y-3(3y

Answer 1

(1)5a+(2-4a)=0

5a+2-4a=0

5a-4a+2=0

a+2=0

a=-2

(2) 25b-(b-5)=29

25b-b+5=29

(25-1)b+(5-29)=0

24b-24=0

b-1=0

b=1

(3) 7x+2(3x-3)=20

7x+6x-6=20

(7+6)x-(6+20)=0

13x-26=0

x-2=0

x=2

(4)8y-3(3y+2)=6

8y-9y-6=6

(8-9)y-6-6=0

-y-12=0

y+12=0

y=-12