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6(2a-b)-4(5b-3a) = 12a-6b-20b+12a = 24a-26b
4(2a-b)-2(5b-3a)+3 = 8a-4b-10b+6a+3 = 14a-14b+3
3(2a - b) + 2(5b - 3a) =
6a - 3b + 10b - 6a =
6a - 6a - 3b + 10b =
7b
b. 6p - 4q =
6(2a - b) - 4(5b - 3a) =
12a - 6b - 20b + 12a =
12a + 12a - 6b - 20b =
24a - 26b
c. 4p - 2q + 3 =
4(2a - b) - 2(5b - 3a) + 3 =
8a - 4b - 10b + 6a + 3 =
8a + 6a - 4b - 10b + 3 =
14a - 14b + 3