Solutions by everydaycalculation.com

How to solve 7/x = 2/12? Get the answer and stepwise instruction to solve linear equation in one variable 𝒙.

We have 7**x** = 212

Cross multiplying the ratios, gives

7 × 12 = 2**x**

or, 2**x** = 7 × 12

Divide both sides by 2, which is the coefficient of **x****Note: ** if a = b, then a ÷ c = b ÷ c

Therefore, 2**x**2 = 7 × 122

**x** = 842

To simplify, divide both numerator and denominator by 2, which is the GCF of 84 and 2:

**x** = 421 or, **x** = 42