math
posted by Abby .
Could someone help me solves these questions? And can you show me how you did it? I can't figure out how to do these ones... I would really appreciate any help.
Questions~~
~ 3x – 19 = 2
~ 4x  12x = 62 + 4(11)
~ x/8 + 7 =  10
~ 4(5x – 9) = 2(3x + 7)
~ ½ x – 5 = (3/8)x + 2
~ 3(x – 4) – (x + 5) = 2x + 11

If you show us how you would do the first problem, we can help you with the others.

3x – 19 = 2
Add ‘19’ to each side of the equation ~ 19+19+3x= 2+19
Combine like terms~ 19+19=0
0+3x= 2+19
3x= 2+19
Combine like terms~ 2+19=17
3x=17
Divide each side by‘3’~ x=5.666666667
X = 5.666666667 
Good.
What about the others? 
2. 4x  12x = 62 + 4(11)
Combine like terms ~ 4x+12x=8x
8x= 62+4(11)
Multiply ~ 4*11
8x=62+44
Combine like terms ~ 62+44=106
8x=106
Divide each side by ‘8’ X=13.25
X= 13.25
3. x/8 + 7 =  10
?? I can't figure this out
4. 4(5x – 9) = 2(3x + 7)
Add ‘6x’to each side of the equation ~ 36+20x+6x= 14+ 6x+6x
Combine like terms ~ 20x +6x=26x
36+26x=14+ 6x+6x
Combine like terms ~ 6x+6x=0
36+26x= 14+0
36+26=14
Add ‘36’ to each side of the equation ~ 36+36+26x=14+36
Combine like terms ~ 36+36=0
0+26x= 14+36
26x= 14+36
Combine like terms ~ 14+36=22
26x=22
Divide each side by ‘26’ ~ x= 0.8461538462
x= 0.8461538462
5. ½ x – 5 = (3/8)x + 2
?? I can't figure this one out
6. 3(x – 4) – (x + 5) = 2x + 11
Combine like terms ~ 12+ 5= 17
17+3x+ 1x=2x+11
Combine like terms ~ 3x+ 1x=2x
17+2x=2x+11
Add ‘2x’ to each side of the equation
17+2x+2x=11+2x+2x
Combine like terms~ 2x+ 2x=0
17+0=11+2x+2x
17=11+2x+2x
Combine like terms~ 2x+ 2x=0
17+11+0
17=11
Could you please show me how to do #3 and #5?
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