Question

calculeaza si afla numerele care lipsesc de pe fiecare pestisos.ex 23.

Answer 1

36-9 x a=9
9 x a=36-9
9 x a=27=> a=27:9=3

16+bx4=32
4b=32-16
4b=16 => b=4

81-c:9=72
c:9=81-72
c:9=9 => c=81

d:5+15=25
d:5=25-15
d:5=10 =>d=50

n x 5-5=40
5n=40+5
5n=45 => n=9