Question

faça a conta 50-3×{7+8÷4-[20-3×(9-5)]}

Answer 1

50-3 x {7+8:4-[20-3 x 4]}
50-3 x {7+8:4-[20-12]
50-3 x {7+8:4-8}
50-3 x {7+2-8}
50-3 x 1
50-3 
47,