## Elementary Technical Mathematics

$$12x+12=72$$ or simplified $$x+1=6$$
We can call our unknown number "$x$". The product of a number and 12 can be written as $12x$ and if we add 12 to this we get $12x+12$. So, $12x+12=72$ IMPORTANT: We could simplify this equation by dividing both sides by 12. $\frac{12x}{12}+\frac{12}{12}=\frac{72}{12}$ This gives us, $x+1=6$