Q: What is 4a plus 2 when a equals 2?

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4a + 2 = Answer let a = 2 then Answer equals 4(2) + 2 = 8 + 2 = 10.

4a + 2 = 4(6) + 2 = 24 + 2 = 26

a= -4

9a + 4a = 26 13a = 26 a = 26/13 a = 2

4a+3a-4 = 10 4a+3a = 10+4 7a = 14 a = 2

5

It is 9

(1) 4a-5b=7 (2) 4a+5b=17 (1)-(2) gives 4a-5b-(4a+5b)=7-17 then -10b=-10 so b=1 from (2) one gets 4a=17-5b=17-5x1=12 so a=3 (3,1) is the solution

It can do, for the right value of A

-1

4a+5=25 4a=25-5 4a=20 a=20/4 a=5

4a+3-a =12 4a-a = 12-3 3a = 9 a = 3

4a + a = 25 add 4a and a 5a = 25 then divide 25 by 5 a = 5

9=4a+13 9-13=4a -4=4a -4/4=a -1=a a=-1

11a+9 = 4a+30 11a-4a = 30-9 7a = 21 Solution: a = 3

so 5a = -20 making a = -4

a=-12

A = 6

a is equal to 1.

2a*3 = 8+4a 6a = 8+4a 6a-4a = 8 2a = 8 a = 4

a=5

6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b

7a-17 = 4a+1 7a-4a = 1+17 3a = 18 a = 6

It is an equation in the single unknown variable, a. a = -4

2a + 9 = 4a - 19 9 + 19 = 4a - 2a 28 = 2a a = 14