|
Question 3291: 3/4X-1/4X+7-2=4
10(b-3)=2(6+b)
Answer by farriem(7)   (Show Source):
You can put this solution on YOUR website! The answer for your 1st problem is
1) Simplify
2) Subtract 5 from both sides
3) Mutiply both sides by 2
4) Check
Work
1) 3/4x-1/4x+7-2=4
2/4x+5=4
1/2x+5=4
2) 1/2x+5-5=4-5
1/2x=-1
3) 1/2x*2=-1*2
x=-2
4) 3/4(-2)-1/4(-2)+7-2=4
-6/4- -2/4 +7-2=4
-1 1/2 +1/2 +7-2=4
-1+7-2=4
4=4
The answer for your 2nd problem is
1) Distribute
2) Add 30 to both sides
3) Subtract 2b from both sides
4) Divide both sides by 8
5) Check
Work
1) 10(b-3)=2(6+b)
10b-30=12+2b
2) 10b-30+30=12+2b+30
10b=42+2b
3) 10b-2b=42+2b-2b
8b=42
4) 8b/8=42/8
b=5.25
5) 10((5.25)-3)=2(6+(5.25))
10(2.25)=2(11.25)
22.5=22.5
|
|
|
| |
