For example: 1/2+1/4+1/8 are dissimilar fractions but also a rational expression that can be simplified to 7/8
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similar fraction is the same denominator and dissimilar fraction is cannot the same denominators
A dissimilar fraction is a fraction where the denominator is not the same as the others .
Dissimilar fractions have different denominators as in the following examples 1/2, 3/5 and 7/8
multiplying rational expressions means multiplying two alg. rxpressions that look like fractions, Just like normal, multiply numerators and multiply denominators then reduce. Division, just like regular fractions means to invert the divisor and the multiply (as above)