= 17× 37 (5 +25 18 +25 14)
= 65438/37+07×37/25
= 17/25
2)( 1 1-25 1× 7)+(9-25 1 1×5)+(7-25 1 1×)
= 1 1+9+7-25 part 1 1×(7+5+3)
= 1 1× 15 in 27-25。
= 27-33/5
= 27-6-3/5
= 2 1-3/5
=20 2/5
PS: X is multiplication. I think you should know.
Ps2: If it is good, please adopt it. I'm a freshman, but I can teach you.
chapter one
A dollar at a time is different from a dollar at a time.
1, i