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I need help with this problem.please helpDirections: Solve each system by substitution.

I need help with this problem.please helpDirections: Solve each system by substitution-example-1
User Bob Dizzle
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1 Answer

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Solve each system by substitution

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To solve by substitution, you organize one of the equations in terms of one of the variables to replace it in the other.

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y = 6x (1)

2x + 3 y = -20 (2)

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In this case, (1) can be replaced in (2) to leave a single variable x

2x + 3 y = -20

2x + 3* (6x ) = -20

(2 + 18)x= -20

x = -20 / 20 = -1

x=-1

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Finally, you find y in any of the equations

y = 6x

y= 6*(-1)

y = -6

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Verifying

2x + 3 y = -20

2*(-1) + 3*(-6) =-20

-2 -18 = -20

-20=-20

User Xxmbabanexx
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