Question

Substitute the value 26.7 (or the exact value of 80/3) for x in the first of the original equation (x + y = 40) to find the value of y. Once you have found the value of y using the first of the original equation, you can substitute this value of y and the value of x (26.7) into the second of the original equation (0.75x + 1.5y = 40) to check your work. If the values that you find on the two sides of the equal sign are not equal, then you must recheck your work.

Answer 1

Complete Question

The complete question is shown on the first uploaded image

Answer:

the value of  $y = 13.3$

Explanation:

From the question we are told that

       The equation is  (x + y = 40)

        The first value of x is  $x_1 = 26.7$

        The second equation is  (0.75x + 1.5y = 40)

So  substituting $x_1$

     $26.7 + y = 40$

=>   $y = 13.3$

Now substituting y and  $x_1$ into second equation

       $0.75(26.7) + (1.5* 13.3) = 40$

 =>  $40 = 40$

So  $y = 13.3$