Question

Solve for X please!!!!!!!!!!!!! I need this answer ASAP 2x + 1/3x = 21

Answer 1

x = 9

We know:

• we can add/subtract the same expression to both sides of the equation to get an equivalent equation;
• we can multiply/divide both sides of the equation by the same non-zero number to get the equivalent equation.

Equivalent equations are algebraic equations that have identical solutions.

We have the equation:

$2x+\dfrac{1}{3}x=21$

SOLUTION:

multiply bot sides by 3

$3\cdot2x+3\!\!\!\!\diagup\cdot\dfrac{1}{3\!\!\!\!\diagup}x=3\cdot21\\\\6x+x=63\\\\7x=63$

divide both sides by 7

$\dfrac{7\!\!\!\!\diagup x }{7\!\!\!\!\diagup}=\dfrac{63}{7}\\\\\boxed{x=9}$

Answer 2

Answer: The answer is 9.