solve :
9/2 × (-5/7)
Answers
Answer:
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Problem & Workout - LCM Method
What is 7/9 minus 2/5 as a fraction by subtraction using LCM method?
step 1 Address formula, input parameters & values.
Input parameters & values:
7
9
&2
5
7
9
-2
5
= ?
step 2 For unequal denominators, find the LCM (least common multiple) for both denominators
The LCM for 9 and 5 is 45.
step 3 To have the common denominator, multiply the LCM with both numerator & denominator
=(7 x 45)
(9 x 45)
-(2 x 45)
(5 x 45)
=35
45
-18
45
=(35 - 18)
45
step 4 Find difference between numerators and rewrite it in a single form.
=17
45
7
9
-2
5
=17
45
By using LCM method, 17/45 is the equivalent fraction by subtracting 2/5 from 7/9.
Problem & Workout - Cross Multiplication Method
step 1 Address formula, input parameters & values.
Input parameters & values:
7
9
&2
5
7
9
-2
5
= ?
step 2 Cross multiply both numerator & denominator, multiply both denominators and rewrite as below
=(7 x 5) - (2 x 9)
(9 x 5)
step 3 Simplify & rewrite the fraction
=(35 - 18)
45
7
9
-2
5
=17
45
By using cross multiplication method, 17/45 is the difference between two fractions 7/9 and 2/5.