Question

Раскройте скобки и вычислите:
1.) (84-27)-(39-27)-(84-39)
2.) (3.7+4.96)-(3.7-3.04)
3.) -7.8-(5.39-12.8)

Answer 1

1) 57-12-45 = 45-45 = 0
2) 8.66-0.66 = 8
3) -7.8-(-7.41) = -0.39