SOLUTION: please help me. I am a virtual school student and do not understand how to figure thease out even with the answers. 1)15m+3 ------ 2 =-6 2)3/2*-15=-12 3)-7x+3=-15/2

Algebra ->  Equations -> SOLUTION: please help me. I am a virtual school student and do not understand how to figure thease out even with the answers. 1)15m+3 ------ 2 =-6 2)3/2*-15=-12 3)-7x+3=-15/2      Log On


   

Question 65656: please help me. I am a virtual school student and do not understand how to figure thease out even with the answers.
1)15m+3
------
2
=-6
2)3/2*-15=-12
3)-7x+3=-15/2
4)4x+1/2(12*t2)=3
5)3/2(x+8)=6x

Answer by funmath(2933) About Me  (Show Source):
You can put this solution on YOUR website!
1)
%2815m%2B3%29%2F2=-6
2%2815m%2B3%29%2F2=2%28-6%29
15m%2B3=-12
15m%2B3-3=-12-3
15m=-15
15m%2F15=-15%2F15
highlight%28m=-1%29
Check by substituting -1 in for m and see if the equations sides equal.
%2815%28-1%29%2B3%29%2F2=-6
%28-15%2B3%29%2F2=-6
-12%2F2=-6
-6=-6 We're right!!!
:
2)3/2*-15=-12
You seem to have a type-o on #2. Let me know what you meant and I'll edit this.
:
3)-7x+3=-15/2
2%28-7x%2B3%29=2%28-15%2F2%29
-14x%2B6=-15
-14x%2B6-6=-15-6
-14x=-21
-14x%2F-14=-21%2F-14
highlight%28x=3%2F2%29
Check:
-7%283%2F2%29%2B3=-15%2F2
-21%2F2%2B6%2F2=-15%2F2
-15%2F2=-15%2F2 We're right!!!
:
4)4x+1/2(12*t2)=3
I think this contains another type-o. Let me know what you meant, and I'll get back to this one.
:
5)3/2(x+8)=6x
2%283%2F2%29%28x%2B8%29=2%286x%29
3%28x%2B8%29=12x
3x%2B24=12x
3x-3x%2B24=12x-3x
24=9x
24%2F9=9x%2F9
highlight%28x=8%2F3%29
Check:
%283%2F2%29%288%2F3%2B8%29=6%288%2F3%29
4%2B3%284%29=2%288%29
4%2B12=16
16=16 We're right!!!
Happy Calculating!!!