Question

calcule o valor de y na figura ​

Answer 1

$\large\boxed{\begin{array}{l}\sf\dfrac{2y+2}{\backslash\!\!\!8_2}=\dfrac{4y-12}{\diagdown\!\!\!\!\!\!12_3}\\\\\sf\dfrac{2y+2}{2}=\dfrac{4y-12}{3}\\\\\sf\dfrac{\backslash\!\!\!2\cdot(y+1)}{\backslash\!\!\!2}=\dfrac{4y-12}{3}\\\sf y+1=\dfrac{4y-12}{3}\\\\\sf 4y-12=3y+3\\\sf 4y-3y=3+12\\\sf y=15\end{array}}}$