Question

Write the sum of the two algebraic expressions modeled by the algebra tiles. Let x be the variable. Then use the algebra tiles to simplify the expression.

Answer 1

Step-by-step explanation:

x + 1 = 15

solve -

x= 15 - 1

x = 14

x is a variable so it's not fix value in math

Answer 2

Let the equation be :

                       $\frac{1}{x} +\frac{2}{3x} =\frac{1}{3}$   (where x is a variable)

solution:

-To find the value of 'X':

             $\frac{1}{3}$ =    $\frac{3x(1)+2(x)}{x*3x}$  (cross multiplication)

             $\frac{1}{3}$ =   $\frac{5x}{3x^{2} }$  

              $x$=  $\frac{5}{1}$

              $x$=$5$  

-hence obtained the value of 'x' using two algebraic  sum equation.