Question

(y-15)x2-[18-18:3+(100-5x15)=12

Answer 1

(y-15)×2-[18-18:3+(100-5×15)]=12

(y-15)×2-[18-6+(100-75)]=12

(y-15)×2-(18-6+25)=12

(y-15)×2-37=12

(y-15)×2=12+37=49

y-15=49:2=24,5

y=24,5+15

y=39,5