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The expression 2(a+b)-8.1 for certain values of a and b.find the value of the following expressions for the same values of a and b: 3(a+b)

User Thesteve
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1 Answer

19 votes
19 votes

Note: Consider the given equation is
2(a+b)=8.1 instated of
2(a+b)-8.1.

Given:

The expression
2(a+b)=8.1 for certain values of a and b.

To find:

The value of
3(a+b) for the same value of a and b.

Solution:

We have,


2(a+b)=8.1

Divide both sides by 2.


(a+b)=(8.1)/(2)


(a+b)=4.05

Multiply both sides by 3.


3(a+b)=3* 4.05


3(a+b)=12.15

Therefore, the value of
3(a+b) is 12.15.

User Beebcon
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