Do this: write it out 2 |2a + 4b + 8 Now what divides into all the numbers? ---------------- a + 2b + 4 answer is 2(a+2b+4)
2a*3 = 8+4a 6a = 8+4a 6a-4a = 8 2a = 8 a = 4
9a +8 -2a -3 -5a = 2a +5
2a + a = 3a
(6ab + 9b)/(2a + 3) = 3b(2a + 3)/(2a + 3) = 3b
9a +8 -2a -3 -5a = 2a +5
9a +8 -2a -3 -5a = 2a +5
2a+12=8 2a=-4 a=-2 So a is -2.
Do this: write it out 2 |2a + 4b + 8 Now what divides into all the numbers? ---------------- a + 2b + 4 answer is 2(a+2b+4)
2a*3 = 8+4a 6a = 8+4a 6a-4a = 8 2a = 8 a = 4
2a = 8 + 4aSubtract 8 from each side:2a - 8 = 4aSubtract 2a from each side:-8 = 2aDivide each side by 2:-4 = a
2a + 10 + 5a - 2 = (2a + 5a) + (10 - 2) = 7a + 8
(5a+8) - (2a+4) =3a +4 To do this, simply subtract like terms. 5a-2a=3a and 8-4=4
2a+54=38 2a=38-54 2a=-16 a=-16/2 a=-8
2a-5
2a+5
a + a + a - 2a = 3a - 2a = a