2a + 1 = 3
subtract 1 from both sides
2a = 2
divide both sides by 2
a = 1
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If 3a+5=5a+3, then: 3a+5 - 3a = 5a+3 - 3a 5=2a+3 5 - 3=2a+3 - 3 2=2a a=1
a+b+2+3=5+a+b
2a*3 = 8+4a 6a = 8+4a 6a-4a = 8 2a = 8 a = 4
yes, if a=42a+3=112x4=88+3=11
(6ab + 9b)/(2a + 3) = 3b(2a + 3)/(2a + 3) = 3b