90*b+50=230 с...

Question

90*b+50=230 с проверкой!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

90*b+50=230
90*b=230-50
90*b=180
b=180:90
b=2
90*2+50=230
230=230

Answer 2

90*b=230-50
B= 90*b=180
b=180:90
B=2
90*2+50=230