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Q: What is 5a plus 2 when a equals 9?

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-7a+2a+9 is also -5a+9. -5a+9=24. -5a=15. a=-3.

Yes.

How do you work out 5a plus 7 equals 9? Put in equation form5a+7=9 subtract 7 from both sides gives you 5a=2divide 5 from both sides gives you a=2/5 or .4substitute in .4 for your a to check answer5(.4)+7=9

5a3-45a=-2a2+18 5a(a2-9)=-2(a2-9) 5a=-2 a=-2/5

13a - 6 + a = 5a + 3 + 3a 13a + a - 5a - 3a = 3 + 6 6a = 9 6a/6 = 9/6 a = 3/2

5a-20+2a = 6a-11 5a+2a-6a = 20-11 1a = 9 a = 9

96

If I am correct, 9 plus 7 equals 112.

Since 2 plus 4 is not 10, the "if" statement is false. Given a false "if", logically, 9 + 2 can equal anything you like.

144 9+7 = 16 and 9*16 = 144

25a2-30a+9 (5a-3)^2

2/9+4/9=6/9, which equals 2/3

2 + 5 + 9 + 99 = 115

26

144

-9

143544

9 + -2 = 7

Anton Heinrich Springer?

9+5=14 divided by 7 equals 2

5a+95 :D

144 9+7 = 16 and 9*16 = 144

144

144

The answer is 144. The compound operator for (a) and (b) in each pair is a * (a+b). For 9 and 7, this is 9 x (9+7) = 9 x 16 = 144.