Y = -5x + 24 y = 4x - 21

2 answers:

3 0

Hello!

You can put y into one of the equations

4x - 21 = -5x + 24

Add 5x to both sides

9x - 21 = 24

Add 21 to both sides

9x = 45

Divide both sides by 9

x = 5

You can now put x into one of the original equations

y = 4(5) - 21

y = 20 - 21

y = -1

The answer are x = 5 and y = -1

Hope this helps!

aliya0001 [1]3 years ago

3 0

X=5
Y=-1
IM PRETTY SURE

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$30 - 0.3r = 20+0.2r$

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Let's check the answer

The 20% of 30 is $30 \times \frac{20}{100} = 6$ , while the 20% of 20 is 4. So, we are stating that $30-6 = 20+4$ which is true because both expressions evaluate to 24.