SOLUTION: 36x+54y=450 12x+15y=135
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Question 1205740: 36x+54y=450 12x+15y=135
Found 2 solutions by MathLover1, Theo:
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
......eq.1
.....eq.2....both sides multiply by
---------------------
......eq.1
.....eq.2
---------------------------subtract eq.2 from eq.1
go to eq.1, substitute
solution:
ordered pair (,)
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
36x + 54y = 450
12x + 15y = 135
leave first equation as is and multiply second equation by 3 to get:
36x + 54y = 450
36x + 45y = 405
subtract second equation from first to get:
9y = 45
solve for y to get:
y = 5
replace y with 5 in first equation and solve for x to get:
36x + 54y = 450 becomes 36x + 54 * 5 = 450 which becomes 36x + 270 = 450.
subtract 270 from both sides of the equation to get:
36x = 450 - 270
simplify to get:
36x = 180
solve for x to get:
x = 180/36 = 5
replace x with 5 and y with 5 in the second original equation to get:
12x + 15y = 135 becomes 12 * 5 + 15 * 5 = 135 which becopmes:
60 + 75 = 135 which becomes 135 = 135.
this confirms the values of x = 5 and y = 5 satisfies both original equations.
that's your solution.
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