Question

Tính

a.  (-38)+28.          b .  273+(-123).                 c.   99+(-100)+101

Answer 1

Tính:

a. (-38) + 28 = -10

b. 273 + (-123) = 150

c. 99 + (-100) + 101 = (-1) + 101 = 100

Answer 2

a. (-38)+28=(-10)

b. 273+(-123)=150

c. 99+(-100)+101=100

Answer 3

a.-10

b.150

c.100

Answer 4

a, (-38 ) + 28 = -10

b, 273 + (-123)= 150

c, 99 + ( -100 ) + 101 = 100

Answer 5

a/ (\(-\)38)+28=\(-\)(38\(-\)28)=\(-\)10

b/ 273\(+\)(\(-\)123)=(273\(-\)123)=150

c/ 99\(+\)(\(-\)100)\(+\)101=(99\(+\)101)\(-\)(\(-\)100)=200\(-\)(\(-\)100)=\(+\)(200\(-\)100)=100