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Q: 2a plus 21 equals 8a-9

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2a+5a+9a = 16a

2a+54=38 2a=38-54 2a=-16 a=-16/2 a=-8

a=5

2a+5a=3 7a=3 a=3/7 or .4286

y = x2 + 14x + 21 a = 1, b = 14 x = -b/2a = -14/2*1 = -7

Related questions

a + a + a - 2a = 3a - 2a = a

depends what 'a' =

2a+5a+9a = 16a

a= (+a) or a= (-) b= 2a b= 2a c= (-a) c= (+a)

It is the expression 3 + 2a.

A equals 20.

1

2a + 3a + 4 = 5a + 4

A=2

a = 1

2a+54=38 2a=38-54 2a=-16 a=-16/2 a=-8

2a+12=8 2a=-4 a=-2 So a is -2.

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