Question

tính 

(130,8-75,6):2,4-20,75

133,44:(1,26+3,54)+8,32

4-(15,03:45-3,33)×4,2

 

 

Answer 1

\(a,\left(130,8-75,6\right):2,4-20,75\)

\(=55,2:2,4-20,75\)

\(=23-20,75\)

\(=2,25.\)

Answer 2

\(b,133,44:\left(1,26+3,54\right)+8,32\)

\(=133,44:4,8+8,32\)

\(=27,8+8,32\)

\(=36,12.\)

Answer 3

\(c,4-\left(15,03:45-3,33\right).4,2\)

\(=4-\left(0,334-3,33\right).4,2\)

\(=4-\left(-2,996\right).4,2\)

\(=4-\left(-12,5832\right)\)

\(=4+12,5832\)

\(=16,5832.\)