Question Number 15699 by zildabatistoti last updated on 12/Jun/17
$$\mathrm{3}+\mathrm{5x}=\mathrm{58} \\ $$
Answered by Joel577 last updated on 13/Jun/17
$$\mathrm{5}{x}\:=\:\mathrm{58}\:−\:\mathrm{3}\:=\:\mathrm{55} \\ $$$${x}\:=\:\frac{\mathrm{55}}{\mathrm{5}}\:=\:\mathrm{11} \\ $$