Question

Me ajudem por-favor!!!

Answer 1

$5 \frac{1}{4} = 5 \times 4 + 1 = 21 = \frac{21}{4}$

$\frac{4}{5} \times 3 = \frac{12}{15}$

MMC(4,15)=4×15=60

60÷4×21=315

60÷15×12=48

315-48/60

267/60