Question

a)m-7 sobre 5 =m -3
b)2×-3 sobre 4 = x+1
​gente é urgente prfv respondam agradeço MT

Answer 1

a)

$\color{red}{\frac{m-7}{5}=m-3}$

$\colorbox{black}{\color{cyan}{m - 7 = 5(m - 3)}} \\ \colorbox{black}{\color{cyan}{ 5m - 15 =m - 7 }} \\ \colorbox{black}{\color{cyan}{ 5m - m = 15 - 7 }} \\ \colorbox{black}{\color{cyan}{ 4m = 8}}$

$\color{red}{m=\frac{8}{4}}$

$\colorbox{black}{\color{cyan}{m = 2}}\color{blue}{\checkmark}$

b)

$\color{red}{\frac{2x-3}{4}=x+1}$

$\colorbox{black}{\color{cyan}{2x -3 = 4(x+1)}}$

$\colorbox{black}{\color{cyan}{4x+4=2x-3}}$

$\colorbox{black}{\color{cyan}{4x-2x=-4-3}}$

$\colorbox{black}{\color{cyan}{2x=-7}}$

$\color{red}{x=-\frac{7}{2}}$

$\colorbox{black}{\color{cyan}{x=-3,5}}\color{green}{\checkmark}$