Question

(Fazer cálculos) Num cinema, há 12 fileiras com 16 poltronas e 15 fileiras com 18 poltronas. O número total de poltronas dessa sala de cinema é:

Answer 1

$\boxed{\begin{array}{lr}12f \ . \ 16p= 192\\15f \ . \ 18p=270\\\\192+270=\\\huge\boxed{\sf 462 }\end{array}}$

Answer 2

$\large\boxed{\begin{array}{l}\sf fileiras~poltronas\\\sf 1\longrightarrow 16\\\sf 12\longrightarrow x\\\sf x=12\cdot16\\\sf x=192\, poltronas\end{array}}$

$\large\boxed{\begin{array}{l}\sf fileiras~poltronas\\\sf 1\longrightarrow18\\\sf 15\longrightarrow x\\\sf x=15\cdot18\\\sf x=270\, poltronas\end{array}}$

$\large\boxed{\begin{array}{l}\sf O\, n\acute{u}mero\, total\,de\, poltronas\,\acute{e}\\\sf x=192+270\\\sf x=462 \,poltronas\end{array}}$