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Solve the system of the equations using the elimination or substitution method

Solve the system of the equations using the elimination or substitution method-example-1
User Kus
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1 Answer

4 votes

we have

-2x+8y=-14 ------> equation A

-4x+y=-13 ------> equation B

solve the system

using the elimination method

step 1

multiply by -2 equation A

-2[-2x+8y=-14] -----> 4x-16y=28 -------> equation C

step 2

Adds equation B and equation C

-4x+y=-13

4x-16y=28

-----------------

-15y=15

solve for y

y=-1

Find the value of x

substitute the value of y in any equation

-4x+y=-13 ------> equation B

-4x+(-1)=-13

-4x=-13+1

-4x=-12

x=3

therefore the solution is

x=3 and y=-1

User Twernt
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