Question

100-[36+6×9-(a:3+15)]:3 = 76 plzz desfasurat

Answer 1

  100-[36+6x9-(a:3+15)]:3=76
=[36+6x9-(a:3+15)]:3=100-76=24
=36+6x9-(a:3+15)=24x3=72
=6x9-(a:3+15)=72-36=36
=54-(a:3+15)=36
a:3+15=54-36=18
a:3=18-15=3
a=3x3
a=9