5b - 7 = 2b +5
5b-2b-7=2b -2b +5 subtract 2b from each side to get b on one side
3b-7=5
3b-7+7 = 5+7 now add 7 to both sides to get the numbers on one side
3b = 12
3b/3 = 12/3 finally divide both sides by 3 to solve for b
b = 4
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2s-2b= a+b+c-2b simplified that would be a+c-b.
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?
Y = 2bx divide both sides by 2b Y/2b = x
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