3a + 4b - 5 - 1a + 7b + 3 - 1b
2a + 10b - 5 + 3
2a + 10b - 2
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If a + b = 6, what is the value of 3a + 3b?
add like terms: 3a -2a -5b + 6b +3b - 7b = a -3b
You would factor 3a + 9b as: 3(a+3b)
(x + 3)(a + b)
6a square plus b square