а) (x+23)-18=68
x+23=68+18
x+23=86
x=86-23
x=63
b)(y-31)*25=325
25y-775=325
25y=325+775
25y=1100
y=44
а) (x+23)-18=68
x+23=68+18
x+23=86
x=86-23
x=63
b)(y-31)*25=325
25y-775=325
25y=325+775
25y=1100
y=44