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Anonymous
3a + 4 = 4a - 3
4 = a -3 (subtract 3a from each side)
7 = a (add 3 to both sides)
a = 7
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3a x 2a =24
2a + 3a + 4 = 5a + 4
If 3a+5=5a+3, then: 3a+5 - 3a = 5a+3 - 3a 5=2a+3 5 - 3=2a+3 - 3 2=2a a=1
Thenx = (c - b) / 3a
9a+21 3(3a+7)