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Find five consecutive integers such that:
“The sum of the first and 4 times the third is equal to 56 less than 3 times
the sum of the second, fourth, and fifth.”
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Let the numbers n, (n+1), (n+2), (n+3) and (n+4) be five consecutive integer numbers.
Write equation as you read the problem
n + 4*(n+2) = 3*((n+1) + (n+3) + (n+4)) - 56.
Simplify step by step
n + 4n + 8 = 3*(3n+8) - 56
5n + 8 = 9n + 24 - 56
8 - 24 + 56 = 9n - 5n
40 = 4n
n = 40/4 = 10.
ANSWER. The numbers are 10, 11, 12, 13, 14.
Solved.