Question

calculati:
a)(-3)x2+1
b)1/2×4/3-1/2:5/4(/=supra)
​

Answer 1

Răspuns:

-6+1=-5

4/6-1/2×4/5=

4/6-4/10=

se amplifica ca 10 si 6 fractiile

40/60-24/60=16/60

se simplifica prin 2

=8/30 iar simplificam prin 2

=4/15