Question

calculeaza numerele necunoscute:
a) (ax5):2=40:4
b) 42:(dx3)=21:3
c)(b:3)x6=52-4
d)60-(ex9)=30:5
e)9x(c:6)=6x6
f)72-40=(f:3)x(40:5)

Answer 1

a * 5 = 10 * 2
a = 20 : 5
a = 4
b) 42 : (d * 3) = 7
42 = 7 * 3d
d = 42 : 21
d = 2
c) b : 3 = 48 : 6
b = 8 * 3
b = 24
d) - e * 9 = 6 - 60

e = 54 :9
e = 6
f) 32 = (f : 3) * 8
32 : 8 = f : 3
f = 4 * 3
f = 12
e) am uitat de acest punct
9 * (c : 6) = 36
c : 6 = 36 : 9
c = 4 * 6
c = 24