# How to solve #2.9 xx 10^(11) - 3.7 xx 10^(13)# ?

##### 2 Answers

#### Explanation:

Given:

In order to subtract, you want the exponents to be the same. This allows the decimals to line up for subtracting.

Now subtract the two numbers before the exponents:

Since both numbers have the same exponents, the solution will have the same exponent:

#### Explanation:

Factor out

If the subtraction of a greater value is giving you a problem do this:

make the -370 look as though it is +370 when really it isn't

Note that by example:

Applying the above approach we have:

Consider just the

Still will not work so write:

So the answer to this part is

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Putting it all back together