Respuesta :

Rithikaarun

Answer:

x=9

Step-by-step explanation:

2x+7x=81

add same variables

9x=81

divide by 9 to isolate x

x=9

Let's solve your equation step-by-step.

81=2x+7x

Step 1: Simplify both sides of the equation.

81=2x+7x

81=(2x+7x)(Combine Like Terms)

81=9x

81=9x

Step 2: Flip the equation.

9x=81

Step 3: Divide both sides by 9.

[tex] \dfrac{9x}{9} = \dfrac{81}{9} \\ x = 9[/tex]