SOLUTION: hi i want to see if u can help me with this math probleam and how to do these probleams in the future. 2x+y=10 y=12x

Question 28897: hi i want to see if u can help me with this math probleam and how to do these probleams in the future. 2x+y=10
y=12x
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
2X+Y=10 & Y=12X SUBSTITUTE 12X FOR Y IN THE FIRST EQUATION
2X+12X=10 OR 14X=10 OR X=10/14 NOW SUBSTITUTE 10/14 FOR X IN THE EQUATION
2X+Y=10 OR 2(10/14)+Y=10 OR 20/14+Y=10 Y=10-20/14 OR Y=(140-20)/14 OR
Y=120/14
PROOF 2(10/14)+(120/14)=10 OR 20/14+120/14=10 OR 140/14=10 OR 10=10
120/14=12(10/14) OR 120/14=120/14.
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