Question

Simplify 4/7+0-8/9-13/7+17/21

Answer 1

Answer:

4/7+0-8/9-13/7+17/21

LCM is 63

=(4x9-7x8-13x9+3x17)/63

=(36-56-117+51)/63

= -86/63

Answer 2

Concept:

Simplification is the process of finding the solution to the given data, expression, etc. to get a direct solution.

Given:

4/7 + 0 - 8/9 - 13/7 + 17/21

Find:

We are asked to simplify the given expression.

Solution:

We have,

4/7 + 0 - 8/9 - 13/7 + 17/21

now,

Add or subtract the terms that are not in fractions,

We get,

4/7 - 8/9 - 13/7 + 17/21

Now,

Taking the LCM,

We get,

(36 - 56 - 117 + 51)/63,

On solving we get,

(87 - 173)/63

i.e.

-86/63 or -1.365

So, this is the simplified form.

Hence, the simplified value of the given expression is -86/63 or -1.365.

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