Question 64873This question is from textbook algebra 1
: Determine the best method to solve the system .Then solve for x and y.
2x+y=3x-15
x+5=4y+2x This question is from textbook algebra 1
You can put this solution on YOUR website! 2X+Y=3X-15
2X-3X+Y=-15
-X+Y=-15
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X+5=4Y+2X
X-2X-4Y=-5
-X-4Y=-5
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NOW WE CAN SUBTRACT THESE 2 EQUATIONS AND SOLVE OFOR X & Y.
-X+Y=-15
-(-X-4Y=-5)
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5Y=-10
Y=-10/5
Y=-2 SOLUTION
NOW SUBSTITUTE (-2) FOR Y IN ONE OF THESE EQUATIONS
2X+(-2)=3X-15
2X-2=3X-15
-X=-15+2
-X=-13
X=13 SOLUTION
PROOF
13+5=4(-2)+2*13
18=-8+26
18=18
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