Solutions by everydaycalculation.com
How to solve 20x = 8x + 1440? Get the answer and stepwise instruction to solve linear equation in one one variable 𝒙.
We have 20x + 0 = 8x + 1440
First, we move the x terms to the LHS and constant terms to the RHS of the equation, inverting the sign on the terms. This is also called transposing method.
Transposition is a faster method and combines the following two steps, were we to solve the equation by:
i) Subtracting 0 from both sides
ii) Subtracting 8x from both sides
Therefore, 20x - 8x = 1440 - 0
or, 12x = 1440
Next, divide both sides by 12, which is the coefficent of xNote: if a = b, then a ÷ c = b ÷ c
12x/12 = 1440/12
x = 1440/12
To simplify, divide both numerator and denominator by 12, which is the GCF of 1440 and 12:
x = 120/1 or, x = 120