Subtract: ¹¹/₁₅ - ³/₅ =

Question

Quizplus · Accepted Answer

Step 1: Find the Least Common Denominator (LCD). There are two ways we can do this:
Method 1: Find the first common multiple. List out all multiples of each denominator and find the first common one.
Multiples of 15: 15, 30, 45…
Multiples of 5: 5, 10, 15…
Therefore, LCD is 15.
Method 2: Prime Factors. The LCD will be the product of the largest multiple of each prime that appears on at least one list.
Prime factors of 15: 3, 5
Prime factors of 5:  5
So, the LCD is 3 x 5 = 15
Step 2: Make the denominators the same as the LCD.
 11ec0fda_98da_dc59_a67f_15f6fa9d2651_NR0004_00 Step 3: Simplify. The denominators are now the same.
 11ec0fda_98da_dc5a_a67f_45f06200af7f_NR0004_00 Step 4: Join the denominators.
 11ec0fda_98da_dc5b_a67f_d95f5aeed47f_NR0004_00 Step 5: Simplify.
 11ec0fda_98da_dc5c_a67f_4d6f99231dd5_NR0004_00

Subtract: 11/15 - 3/5 =

Subtract: ¹¹/₁₅ - ³/₅ =