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How do you solve #-2.5x+18-1.6x=5.7#?

Answer 1

Combine like terms, then solve for #x#.

You'll know when two or more terms are like terms because they contain the same variable. In this case, #-2.5x# and #-1.6x# are like terms, so let's combine them to get this:

#-4.1x+18=5.7#

So let's subtract 18 from each side to get our answer.

#-4.1x=-12.3#

Let's divide each side by -4.1 now.

#x=3#

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Answer 2

Avery Alexander

To solve the equation -2.5x + 18 - 1.6x = 5.7, you would first combine like terms to simplify the equation. Then, isolate the variable x by performing operations to both sides of the equation until x is alone on one side. Finally, divide both sides by the coefficient of x to solve for x. The steps are as follows:

Combine like terms: -2.5x - 1.6x = -4.1x.
Subtract 18 from both sides: -4.1x = 5.7 - 18.
Simplify: -4.1x = -12.3.
Divide both sides by -4.1: x = -12.3 / -4.1.
Calculate: x = 3.

Therefore, the solution to the equation -2.5x + 18 - 1.6x = 5.7 is x = 3.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.