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GarryVolchara [31]
3 years ago
9

How do you solve solving system by substitution can someone give me the steps plz

Mathematics
1 answer:
Elden [556K]3 years ago
7 0

Answer:

Isolate one variable in one of the equations and substituting it into the other equation. *note* in example the first substitution is given to you

Step-by-step explanation:

For example:

-3x-4y=-2

y=2x-5

Substitute -4y with second equation

-3x-4(2x-5)=-2

PEMDAS

-3x-8x+20=-2

-11x+20=-2

Subtract 20 on both sides of the = sign

-11x=-22

Divide both sides

x=2

Plug that into the second equation

y=2(2)-5

y=4-5

y=-1

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Calculate the following scenario for a simple interest loan.
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Simple interest is a method of calculating interest on an amount for n period of time with a rate of interest of r. The amount of monthly payments is $287.5.

<h3>What is simple interest?</h3>

Simple interest is a method of calculating interest on an amount for n period of time with a rate of interest of r. It is calculated with the help of the formula,

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Hope this helps
6 0
4 years ago
Read 2 more answers
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