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A number is 5 less than 7 times a second number. Their sum is 89. If x represents the second number, which equation is correct to find the two numbers?
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The first part of the condition says: "A number is 5 less than 7 times a second number."
It means that the first number is equal to (7x -5).
The second part of the condition says: "Their sum is 89."
It means that the sum of the firs number and the second number is 89.
In other words,
(7x-5) + x = 89.
It is your equation to find x.