Question

calculați
a=3int.1/2+2int.2/3-4int.3/4
b=2int.5/50 ×8/7 ÷ 24/10
ajutați-mă vă rog!!​

Answer 1

Răspuns:

a=3int.1/2+2int.2/3-4int.3/4=

7/2+8/3-19/4=(6×7+4×8-3×4)/12=

(42+32-12)/12=86/12=43/6=7si 1/6

b=2int.5/50 ×8/7 ÷ 24/10=

105/50×8/7×10/24=

21/10×8/7×10/24= unde(10/10=1;21/7=3;8/24=1/3)

1×3×1/3=1