SOLUTION: The sum of two numbers is 89. Adding four times the first number to the second number gives 155. Whats the right way to express this equation?

SOLUTION: The sum of two numbers is 89. Adding four times the first number to the second number gives 155. Whats the right way to express this equation?

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Question 129976: The sum of two numbers is 89. Adding four times the first number to the second number gives 155. Whats the right way to express this equation?
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
X+Y=89 OR Y=89-X
4X+Y=155
4X+(89-X)=155
4X+89-X=155
3X=155-89
3X=66
X=66/3
X=22 ANSWER FOR THE SMALLER NUMBER.
22+Y=89
Y=89-22
Y=67 ANSWER FOR THE LARGER NUMBER.
PROOF:
4*22+67=155
88+67=155
155=155
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