21. P=118
21. Q=142
22. P=120
22. R=60
22. S=60
Answer:
woah thankssss a lotttt
r=0.5
Step-by-step explanation:
0.125r+0.25r-0.0625=0.25+r
0.375r-0.0625=0.25+r
0.375r-r=0.25+0.0625
-0.625r=0.3125
r=0.3125/0.625
