Question

d) (40 x 5 – 30 x 6) : 2 + (90 x 2:6) x 7=
e) 450 : 5 + 90 x (72:8-81:9) x 10 =
f) (30 x 2-4 x 5): 4x 16 + (648 : 9-23 +7 x 3) =​

Answer 1

Răspuns:

Explicație pas cu pas:

d)

$= (200 - 180) : 2 + (180 : 6) \cdot 7 = 20 : 2 + 30 \cdot 7 = 10 + 210 = \bf 220$

e)

$= 90+90 \cdot (9-9) \cdot 10 = 90 + 90 \cdot 0 \cdot 10 = 90 + 0 = \bf 90$

f)

$= (60-20) : 4 \cdot 16 + (72 - 23 + 21) = 40 : 4 \cdot 16 + 70 = 10 \cdot 16 + 70 = 160 + 70 = \bf 230$