Question

5n+7(n+4)=88
How do I work it out?

Answer 1

n = 5

Explanation:

5n + 7 (n+4) = 88

Distribute the 7

5n + 7n + 28 = 88

Combine like terms (5n, 7n)

12n + 28 = 88

Subtract 28 from 88 to isolate the exponent (12n)

12n = 60
Divide both sides by 12

n = 5

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To check the answer, replace n in the equation with 5.

5 * 5 + 7 (5 + 4) = 88

5 * 5 + 7 * 9 = 88

25 + 63 = 88

88 = 88

Answer 2

Answer: n = 5

Explanation:

Problem: 5n + 7 (n + 4) = 88

Expand

5n + 7n + 28 = 88

Simplify 5n + 7n + 28 to 12n + 28

12n + 28 = 88

Simplify 88 - 28 to 60

12n = 60

Divide both sides by 12

n =
`(60)/(12)`

Simplify
`(60)/(12)` to 5

n = 5