0.35
Start with 7 / 20. Multiply by a number to get 20 into 100 (as long as the same number is the numerator and denominator with the fraction you're choosing, you won't effect the value of the expression.)
7 / 20 * 5 /5 = (7 * 5) / (20 * 5) = 35 / 100 or 0.35
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0.35
First we need to convert them into like terms. Three fifths is twelve twentieths. Three fourths is fifteen twentieths. Together that is twenty-seven twentieths. That is one and seven twentieths or 1.35 in decimal.
Thirteen twentieths as a decimal is 0.65
three twentieths to a decimal = 0.153/20:= 3 ÷ 20= 0.15 in decimal
Just do the division and move the decimal point two places to the right.