One Step Equations

A one-step equation needs a single inverse operation to find the unknown: undo adding by subtracting, undo multiplying by dividing, and always do the same to both sides. In NSW Year 8 maths (NESA outcome MA4‑EQU‑C‑01) the numbers get harder, with negatives, decimals and fractions, as in \(-3x = -24\) or \(0.4x = 6\).

You will solve equations such as \(x - 11 = 20\), \(\frac{c}{3} = -15\) and \(\frac{t}{2} = \frac{3}{4}\), deal with a subtracted pronumeral as in \(3 - x = 5\), and check each answer by substituting it back in. You will also write an equation from a short story, such as finding the cost of one calculator when 12 of them cost $174. It is part of Year 8 Equations.