Question

Resolva a equação : 3m-9=11

Answer 1

3m=  11+9 

3M=20
M=20/3
M=6,66666667

Answer 2

$\mathtt{ 3m-9=11}$

$\mathtt{3m=11+9 }$

$\mathtt{3m=20 }$

$\boxed{\mathtt{ m=\dfrac{20}{3}}}$