Question

determinati nr x stiind ca : a)1157:x=13 b) x:15=15 c) x:10=1000 d) x:15=100

Answer 1

A)1157:
X=13
X=1157:13
X=89
1157:89=13
B)X:15=15
X=15X15
X=225
225:15=15
C)X:10=1000
X=1000X10
X=10000
10000:10=1000
D)X:15=100
X=100X15
X=1500
1500:15=100

Answer 2

a)  x=1157:13= 89
b)  x=15x15=225
c) x=1000x10=10000
d)  x=100x15=1500