Question

Calculeaza în doua moduri (18 + 45 ) : 9 , ( 63-21) :7, (36+24) : 6 , (72-48) : 8 .

Answer 1

Am sati scriu cel deal doilea mod 18:9+45:9= 63:7-21:7= 36:6+24:6= 72:8-48:8= Cred ca pe primul deja il sti. Calculezi direct.

Answer 2

(18+45):9=63:9=7        18:9+45;9=2+5=7
(63-21):7=42:7=6          63:7-21:7=9-3=6
(36+24):6=60;6=10       36:6+24:6=6+4=10
(72-48);8=24:8=3           72:8-48:8=9-6=3