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# Algebra/Algebra 1

Question
Solve the system by substitution.

x=3y
4x-10y=2

Sorry I haven't been able to be here for awhile.

If x = 3y, then put that in for x in the 2nd equation.
That is, 4(3y) - 10y = 2.

Since 4*3 = 12, that is 12y - 10y = 2.
Since 12y - 10y = 2y, we have 2y = 2.

Dividing by 2 gives y = 1.
That means x=3.

Checking the 2nd equation out gives 4*3 - 10 = 12 - 10 = 2, which is what's there.
So, that is correct.

Algebra

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#### Scott A Wilson

##### Expertise

Any algebraic question you've got. That includes question that are linear, quadratic, exponential, etc.

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I have solved story problems, linear equations, parabolic equations. I have also solved some 3rd order equations and equations with multiple variables.

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Documents at Boeing in assistance on the manufacturiing floor.

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MS at math OSU in mathematics at OSU, 1986. BS at OSU in mathematical sciences (math, statistics, computer science), 1984.

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Both my BS and MS degrees were given with honors.

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Students in a wide variety of areas since the 80's; over 1,000 of them have been in algebra.