SOLUTION: Please help me solve this equation by method of substitution y=x(3) I tried substituting 14 for x. The main equation is x + y = 56 where y =x(3). After the substitution I got 14 +

Question 347672: Please help me solve this equation by method of substitution y=x(3) I tried substituting 14 for x. The main equation is x + y = 56 where y =x(3). After the substitution I got 14 + 42 = 56 and 42=14(3). Is that correct?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
No, that's not correct.
How did you come up with ?
.
.
.
1.
2.
Now substitute eq. 1 into eq. 2, that's where the substitution comes in.

That's where the comes from.
Now use either equation and the result for to find .
From eq. 1,

So the solution is and .
You verify the solution by plugging it back into your original equations.

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