Question

帮我算算下面几道题!事先申明：我是真的不会.①（负3）乘（负5分之7）乘（负3分之1）乘4分之7②8加（负1分之4）减5

Answer 1

(-3)X(-5/7)X(-3/1)X4/7 = -1.25

8+(-1/4)- 5- (-0.25) = -0.75

(-3)-4+19-11+2 = 3

1.4 - (3.6 + 5.2) - 4.3 - (-1.5) = -10.2

0- 29.8- 17.5+16.5- 2.2+7.5 = -25.5