Question 1106448
Andy reads 56 more pages of his book on Monday than on Tuesday. 
<pre>
M = T + 56
</pre>
He reads 125 pages on Monday. 
<pre>
M = 125

Substitute 125 for M in this equation

  M = T + 56

which gives:

128 = T + 56

Subtract 56 from both sides of the equation:

 128 = T + 56
 -56      -56
-------------
  72 = T + 0
  72 = T
</pre>
How many pages in all does he read on Monday and Tuesday?
<pre>
   M + T   =
 125 + 72  =
      197      <--answer

Edwin</pre>