AGORA USANDO PARENTESES, COLCHETES E CHAVES
c) 50 – [ 37 – ( 15 – 8 ) ] =
50 – [ 37 – ( 7 ) ] =
50 – [ 37 – 7 ] =
50 – [ 30 ] =
50 – 30 = 20
g) 950 + { 54 – [ 1 – 1 + (110 – 90) + 18 – 99] + 13 }=
950 + { 54 – [ 1 – 1 + (20) +
18 – 99] + 13 }=
950 + { 54 – [ 1 – 1 + 20 +
18 – 99] + 13 }=
950 + { 54 – [ 0 + 38 – 99] +
13 }=
950 + { 54 – [+ 38 – 99] + 13
}=
950 + { 54 – [– 61] + 13 }=
950 + { 54 + 61 + 13 }=
950 + { 54 + 74 }=
950 + { 128 }=