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disa [49]
3 years ago
8

Solve for x: 2 over 5 plus 3 over 5 x equals quantity x plus 5 over 10

Mathematics
1 answer:
krok68 [10]3 years ago
8 0
(2/5)+(3/(5x))=(x+5)/10
nasty fractions, we hates it forever

so

get rid of all those nasty fractions
multiply both sides by 10x
4x+6=x(x+5)
distribute
4x+6=x^2+5x
minus (4x+6) from both sides
0=x^2+x-6
factor
0=(x-2)(x+3)
set each to zero
0=x-2
2=x

0=x+3
-3=x

x=-3 and 2


3rd option is answer
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