45+×=91... а•10=100.... у-63=17... 84-b=6

Question

45+×=91... а•10=100.... у-63=17... 84-b=6

Answer 1

45+×=91
х=91-45
х=46

а•10=100
10а=100
а=100:10
а=10
у-63=17
у=17+63
у=80

84-b=6
-б=6-84
-б=-78
б=78

Answer 2

45+x=91
x=91-45
x=46

a*10=100
a=100:10
a=10

y-63=17
y=63+17
y=80

84-b=6
b=84-6
b=78