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Q: What is 7b-12 plus 2b plus 3 equals 18?

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3Mgo+2B

4

a + 2b = c a = c - 2b

6

3a + 2b = (3*6) + (2*5) = 18 + 10 = 283a+2b= (3x6)+(2x5)= 18+10=28

3 times 6 is 18 2 times 5 is 10 18 plus 10 is 28

I ask my 11 year old son. 2b + 18 = 4b Subtract 2b form each side: 18 = 2b Divide each side by 2: 9 = b which is the same as b = 9, but you knew that, didn't you?

a = 2b + c then a - 2b = c ie c = a - 2b

1.5

2s-2b= a+b+c-2b simplified that would be a+c-b.

a-2b=c

c= a-2b

2b+3c

If: a = 2b+c Then: a-c = 2b And: b = (a-c)/2

b=7

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2B + 3 = 18 B = 7.5 18 - 3 = 15 2 /15 = 7.5 If the answer is "18", you need to take the "3" away that you have added. After taking the "3" away, it will be easier to figure out what "B" equals. Now, because you have taken away the "3", you are left with "2B". "2B", meaning "2 x B", just means you need to do the opposite to figure out the answer, therefore being "2 / B". Because you took the "3" and you had "15" left over, you will just have to half that, therefore "B" equals "7.5".

a=2b 4b=6c becomes 2b=3c a=3c

That's an equation in which b = -1

8a+2b

12c + 2b

8b + 11 - 3b = 2b + 2 5b + 11 = 2b + 2 5b - 2b = 2 - 11 3b = -9 b = -3

(a + 2b)(a + 2b)

Whan a = 2 and b = 6, 5a + 2b = 5*2 + 2*6 = 10 + 12 = 22

Gathering like terms together, this is equal to 5a + 3b + 7c.