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1,5a-1
b
1+2x
c
3kl+2km
d
-pr+5ps
1,5a - 1
b) ⅔ (1,5 + 3x)
1 + 2x
c)k (3l + 2m)
3kl + 2km
d) -p (r - 5s)
-pr + 5ps