This is mountions Thai Son

    Answer:

x+1+2+3=50-20

x+1+2+3=30

x=30-3-2-1

x=24

Do that

thank you

9^200=(3^2)^200=3^400

=> 9^200=3^400

   75+15+25+85+60+50+40+50+10

=(75+25)+(15+85)+(60+40)+(50+50)+10

=100+100+100+100+10

=410

This is a quick caclulation

Wish you good study