0
Anonymous
11a + 9 = 4a + 30Subtract 9 from both sides to get: 11a = 4a + 21Subtract 4a from both sides to get:7a = 21Divide both sides by 7 to get:a = 3And there's your answer: a = 3
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-1
9=4a+13 9-13=4a -4=4a -4/4=a -1=a a=-1
a is equal to 1.
A = 6
6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b