Solving twostep linear equations
When we solve an equation, we are finding a particular value for the letter (unknown/variable) that makes that equation correct.
The equation 2x + 3 = 13 means that when we take our unknown amount (x), multiply it by 2 and add 3, we get 13. To solve the equation, we need to reverse these steps. It is important that we reverse everything, including the order the operations happened in. So to solve 2x + 3 = 13, we would first subtract 3 from 13 (as this is the opposite or inverse of adding 3) to get 10. Next we divide by 2 (as this is the inverse of multiplying by 2) to get the solution x = 5. Remember that we always use the inverse operation, so in the equation 4x + 6 = 14, our first step would be to subtract 6 from 14, because subtracting 6 is the inverse of adding 6. 
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