Replace the value of a in the equation 6a+3
So 6x6+3=36+3=39.
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a + 18 = 7a a-a +18 = 7a-a 18 = 6a 18/6 = 6a/6 3 = a 3=a
13a - 6 + a = 5a + 3 + 3a 13a + a - 5a - 3a = 3 + 6 6a = 9 6a/6 = 9/6 a = 3/2
-6a + 8 = 2 -6a = -6 a = 1
6a + 9; a = 36a + 9= 6(3) + 9= 18 + 9= 27
-8a + 6a + 7 = 1 -2a = 1 - 7 -2a = -6 a = 6/2 a = 3 Check: -8(3) + 6(3) + 7 = 1 -24 + 18 + 7 = 1 1 = 1