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Anonymous
A=4. Divide both sides by 11 and a=4
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11a+9 = 4a+30 11a-4a = 30-9 7a = 21 Solution: a = 3
11a-3a =8a so 8a+9=-7 8a = -16 a=-2
44.
6a + 5a = -11 11a = -11 a = -11/11 = -1
44 x 44