Specfic reoccuring math question (remainders)

Test Preparation SAT Preparation
1

<p>There is always one question in the math sections that deal with remainders and finding something in the equation.</p>

<p>I can solve it logically, but I would like a more definite way of solving through a step by step equation.</p>

<p>For example:</p>

<p>"If x is an integer and 3 is the remainder when 2x + 7 is divided by 5, then x could be.."</p>

<p>A) 2
B) 3
C) 4
D) 5
E) 6</p>

2

<p>Its B. Just plug and play!</p>

3

<p>lol I know its B. But there is a sure way of solving this. I don't want to just plug in numbers if I can help it.</p>

4

<p>Since when was plug and play a bad method? I find it an incredibly efficient time-saver.</p>