Question Number 226612 by Spillover last updated on 07/Dec/25
Commented by SonGoku last updated on 07/Dec/25
$$\boldsymbol{\mathrm{Solve}}\:\boldsymbol{\mathrm{the}}\:\boldsymbol{\mathrm{system}}\:\begin{cases}{\boldsymbol{\mathrm{m}}\:+\:\boldsymbol{\mathrm{m}}\:=\:\mathrm{20}}\\{\boldsymbol{\mathrm{c}}\:−\:\boldsymbol{\mathrm{l}}\:=\:\mathrm{3}}\\{\boldsymbol{\mathrm{m}}\:−\:\boldsymbol{\mathrm{l}}×\boldsymbol{\mathrm{c}}\:=\:?}\end{cases}. \\ $$