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If three more than four times a number is twenty-one less than seven times the same number. What is the number?

Soluzione

If three more than four times a number is twenty-one less than seven times the same number. What is the number?

Soluzione

The number : 8

Fasi della soluzione

Represent the number with

x

A.T.Q.:

3 + 4 x = 7 x - 21

Risolvi per

x, 3 + 4 x = 7 x - 21 : x = 8

The number : 8

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