Question 65576
2/5=X-2/20 THE EASIEST WAY TO SOLVE THIS EQUATION IS TO CONVERT ALL NUMBERS TO DECIMAL . 
THUS 2/5=0.4 & 2/20=0.1
0.4=X-0.1
X=0.4+0.1
X=0.5 OR 1/2
PROOF
2/5=1/2-2/20
2/5=(10-2)/20
2/5=8/20 CROSS MULTIPLY 
40=40
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IF YOU MUST WORK IN FRATIONS THEN
2/5=X-2/20
X=2/5+2/20 FIND A COMMON DENOMINATOR (20)
X=(8+2)/20
X=10/20
X=1/2
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MERRY CHRISTMAS