Solve the following system of linear equations using elimination. 3x+y=8 -3x+6y=27

Mathematics

1 answer:

3241004551 [841]3 years ago

7 0

Answer:

x=1 and y=5

BRAINLIEST PLZZZ

Step-by-step explanation:

Let's solve your system by elimination.

3x+y=8;−3x+6y=27

3x+y=8

−3x+6y=27

Add these equations to eliminate x:

7y=35

Then solve7y=35for y:

7y=35

(Divide both sides by 7)

y=5

Now that we've found y let's plug it back in to solve for x.

Write down an original equation:

3x+y=8

Substitute5foryin3x+y=8:

3x+5=8

3x+5+−5=8+−5(Add -5 to both sides)

3x=3

(Divide both sides by 3)

x=1

Answer:

x=1 and y=5

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