Question

subtract (2/7-5/21) from the sum of 3/4 ,5/7 7/12​

Answer 1

Answer:

Answer: Step-by-step explanation: (3/4 + 5/7 + 7/12) - (2/7 - 5/21). First we have to take out the LCM of the denominators 4, ...

Answer 2

Answer:

2

Step-by-step explanation:

First we add 3/4+5/7+7/12

Then,. (We use simple process of fraction addition)

• We take L.C.M of 4,7,12
• We get 84 as L.C.M,
• Divide 84 by 4
• We get 21 then
• Multiply with 3
• We get 63
• Again, divide 84 by 7
• We get 12
• Multiply it with 5
• We get 60
• Again, divide 84 by 12
• We get 7
• Multiply it by 7
• We get 49
• Now, add 63+60+49
• We get 172
• Divide it with 84
• We get 43/21

# Now solve, 2/7-5/21

• We use simple process of fraction substraction

Again, first solve for L.C.M of 7,21

• We get 21
• Divide 21 by 7
• We get 3
• Multiply it by 2
• We get 6
• Again, Divide 21 by 21
• We get 1
• Multiply it by 5
• We get 5
• Now Substract 5 from 6
• We get 1
• Divide it by 21
• We get 1/21

Now,substract 1/21. from 43/21

Again,we use the simple process of fraction substraction.

• Again,solve for L.C.M of 21 and 21

We get 21 as L.C.M

• Divide 21 by 21
• We get 1
• Multiply it by 43
• Again, Divide 21 by 21
• We get 1
• Multiply it by 1
• Now, substract 1 from 43
• We get 42
• Divide it by 21
• We get 2

Here, 2 is the answer.

Thank you.