Question

Tính:

a, - ( -315) + ( -115) - 105 + 25

b, 85 + ( -185)

c, 215 + [ 144 - ( 144 - 215) ]

d, ( -98) . (1 - 246) - 246 . 98

e, A = [ ( -20) + (-8) ] + [ ( -7) +3 ]

 f, B = \(\frac{1}{2}-\frac{5}{7}.\frac{14}{25}\)

Answer 1

ra kết quả thui nhé! 

a/ 120

b/ -100

c/ 430

d/ -98

e/ A=-32

f/ B=1/10

tik nhá