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-Dominant- [34]

3 years ago

15

4r + 9r- 11r +7rSimfly the expressions by combing like terms??

2 answers:

MissTica3 years ago

7 0

Solve this one in exactly the same way as I solved the one
that you posted 1 minute before this one.

-- add up all the ' r 's .

-- add up all of the just-plain-numbers

This time, the answer looks like 9r .

You should spend a few minutes with it so that
you know where this answer comes from.

Alex787 [66]3 years ago

6 0

9r because 4+9 is 13+7 is 20-11 is 9

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alisha [4.7K]

Answer

<h2>4</h2>

Step-by-step explanation:

Given,

r = 10

Let's create an equation,

$3r = 10 + 5s$

plugging the value of r

$3 \times 10 = 10 + 5s$

Multiply the numbers

$30 = 10 + 5s$

Move 5s to L.H.S and change its sign

Similarly, Move 30 to R.H.S and change its sign.

$- 5s = 10 - 30$

Calculate

$- 5s = - 20$

The difference sign ( - ) should be cancelled on both sides

$5s = 20$

Divide both sides of the equation by 5

$\frac{5s}{2} = \frac{20}{5}$

Calculate

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The value of s is 4.

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PolarNik [594]

Answer:

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Step-by-step explanation:

<u>Change in pay:</u>

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<u>Percent of change:</u>

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