SOLUTION: 1{{{3/5}}}x - 2{{{1/2}}} = {{{7/10}}} I'm not sure how to solve this. Showing your work would really help. Thanks so much,

Algebra ->  Expressions-with-variables -> SOLUTION: 1{{{3/5}}}x - 2{{{1/2}}} = {{{7/10}}} I'm not sure how to solve this. Showing your work would really help. Thanks so much,       Log On


   

Question 185865: 13%2F5x - 21%2F2 = 7%2F10
I'm not sure how to solve this. Showing your work would really help.
Thanks so much,
Rachel
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
13%2F5x - 21%2F2 = 7%2F10
8X/5-5/2=7/10
8X/5=7/10+5/2
8X/5=(7+5*5)/10
8X/5=(7+25)/10
8X/5=32/10
10*8X=5*32
80X=160
X=160/80
X=2 ans.
Proof:
8*2/5-5/2=7/10
16/5-5/2=7/10
(2*16-5*5)/10=7/10
(32-25)/10=7/10
7/10=7/10