i need help question in description

Question

an art exhibition was held from friday to sunday. 50 more people attended on saturday than on friday, and 80 more people attended on sunday than on saturday. a total of 540 people attended the exhibition. how many people attended on friday

Answer 1

x = # people on Friday

y = # people on Saturday

z = # people on Sunday

 

y = x + 50

z = y + 80 = x + 50 + 80 = x + 130

 

x + y + z = 540

x + (x+50) + (x+130) = 540

3x + 180 = 540

 

Finish solving for x to find the number of attendees on Friday