130CM CUBEOF GAS AT 20 DEGREE EXACLT A PRESSURE OF 750MMhg CALCULATE ITS PRESSURE IF ITS VOLUME IS INCREASED TO 150CM CUBE AT 35 CENSLIS

Answer 1

no calculus here. Nor good spelling/typing either. Still,
PV=kT so PV/T = k, a constant. That means you want P such that
150P/(273+35) = 750*130/(273+20)
Now just crank it out.

AND STOP SHOUTING!

Answer 2

If you have trouble following the PV = k you can also use
P1V1 = P2V2, substitute and crank it out.