Question

afla numerele necucnoscute 10 x9+a=100 93:3+n=100 m-300:100+47 m-300:100=47

Answer 1

10 * 9 + a = 100
a = 100 - 90
a = 10
93 : 3 + n = 100
n = 100 - 31
n = 69
m - 300 : 100 = 47
m - 3 = 47
m = 47 + 3
m = 50

Answer 2

$a).10 \cdot 9+a=100 \\ 9a+a=100 \\ a=100-90 \\ a=10 \\ b).93:3+n=100 \\ 31+n=100 \\ n=100-31 \\ n=69 \\ c).m-300:100=47 \\ m-3=47 \\ m=47+3 \\ m=50$