The sum of integers x and y is 280. If x is divided by 7, the quotient is y. What is the value of x?
2 answers:
Answer:
x = 245
Step-by-step explanation:
The sum of integers x and y is 280; x + y = 280
If x is divided by 7, the quotient is y; x/7 = y so x = 7y
Now you have 2 equations:
x + y = 280
x = 7y
Substitute x = 7y into x + y = 280
7y + y = 280
8y = 280
y = 35
x = 7(35)
x = 245
Answer
x = 245
Answer:
Step-by-step explanation:
x + y = 280
x/7 = y Multiply both sides by 7
x/7 * 7 = 7*y
So x = 7y
Put 7y into the top equation.
7y + y = 280
8y = 280 Divide both sides by 8
8y/8 = 280/8
y = 35
====================
x + y = 280
x + 35 = 280
x + 35 - 35 = 280 - 35
x = 245
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