# KinderCalculus/Dress

{\displaystyle {\begin{aligned}4x+5y&=3\\-4x+4x+5y&=3-4x\qquad {\text{(when we add something to one side of the scale, we must do the same to the other side to maintain the balance.)}}\\5y&=3-4x\qquad {\text{(thus, we dig through the outer layer by reversing the verb from + to - and moving the noun 4}}x{\text{ to the other side.)}}\\y&={\frac {3-4x}{5}}\end{aligned}}}