Question

Calcule as expressões numéricas: 7 + 20 - 4 + R: - 12 + 14 - 5 + 3 - 14 + 40 + 14 = R: - 18 = 20 - 15 - 3 - 20 - 5 = R: - 75 + 70 + 50 - 61 = R:

Answer 1

7+20-4= 27-4= 23
-12+14-5+3-14+40+14= 2-8-58= -6-58= 52
-75+70+50-61= -5-11=-6