x-15=30
x=30+15
x=45
x-44=83
x=83+44
x=127
x-(75÷5)=30
45-(75÷5)=30
30=30
x-(88÷2)=83
127-(88÷2)=83
83=83
x-15=30
x=30+15
x=45
x-44=83
x=83+44
x=127
x-(75÷5)=30
x-15=30
x=30+15
x=45
45-(75÷5)=30
30=30
x-(88÷2)=83
x-44=83
x=83+44
x=127
127-(88÷2)=83
83=83