Question

3•9:[100-(50+3•8)+(6g-7•3)]=2

Answer 1

3•9:[100-(50+3•8)+(6g-7•3)]=2
27:[100-(50+24)+(6g-21)]=2
27:(100-74+6g-21)=2
27:(26+6g-21)=2
27:(6g+5)=2
g+5=27:2
g=27:2-5
g=(27-2x5):2
g=(27-10):2
g=17:2
g=8,5