The unknown number is n. So n is the unknown variable in the equation.
In order to write an equation in which n is included we must know some dependence of n with other values.
We know that <span>the difference of three times a number and 44 is −19. So, we can write:
3*n-44=-19
3*n=-19+44
3*n=25
n=25/3
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Let x be the original price. The discount on this item is 64% of x, that means:
discount = x(0.64) = $30, x = 30/0.64 = original price x = $46.875:
Write an equation:
NET PRICE = Original price - discount (on the original price)
NET PRICE = x - 0.64.x or NET PRICE = x(1-0.64)
NET PRICE =0.36.x
The answer is A. Subtract the five on both sides and you end up with A :)
