Key to "How do you solve 54=10x?"

Kaydence Huff

Answered question

2022-01-22

How do you solve

\frac{5}{4} = \frac{10}{x} ?

portafilses

Beginner2022-01-23Added 13 answers

\frac{5}{4} = \frac{10}{x}

, we have

\frac{5}{4} \times 4 = \frac{10}{x} \times 4

\frac{5}{⧸ 4^{1}} \times ⧸ 4^{1} = \frac{40}{x}

5 \times x = \frac{40}{x} \times x

5 \times x = \frac{40}{⧸ x} \times ⧸ x

5 x = 40

5 x \times \frac{1}{5} = 40 \times \frac{1}{5}

⧸ 5 x \times \frac{1}{⧸ 5} = ⧸ 40^{8} \times \frac{1}{⧸ 5^{1}}

x = 8

Aaron Hughes

Beginner2022-01-24Added 13 answers

A different approach is to cross multiply:

5 x = 40

x = \frac{40}{5}

x = 8

RizerMix

Expert2022-01-27Added 656 answers

5 \cdot x = 10 \cdot 4

5 x = 40

x = \frac{40}{5}

x = 8

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