# MAT 101

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Solve for X and Y in the following problems using either substitution or elimination methods.

2X + 5Y = 19 , 3X + 3Y = 15
4X + Y = 22 , 2X + 3Y = 16
12X + Y = 174 , 8X - 2Y = 36

• MAT 101 -

Substitution method

2X + 5Y = 19 , 3X + 3Y = 15

X = (19-5Y)/2

Substitute that value for X in the second equation and solve for Y. Put the value of Y into the first equation to solve for X. To check, put both values into the second equation.

Use the same method for the remaining equations.

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