The expression 2b - c represents the result of subtracting the value of c from twice the value of b. This can also be written as 2 multiplied by the variable b, then subtracting the value of c. The result will depend on the specific values of b and c.
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2s-2b= a+b+c-2b simplified that would be a+c-b.
They are terms of an algebraic expression that can be simplified to: 2b+2c
The simplified answer is: 4c+2b
c-2b
If 2b a plus c, then we can say that 3tan A 2tan c = 21.