Two parallelogram-shaped pieces of tile have the same area. One has a base of 20 centimeters and a height of 15 centimeters. The
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Start with
We observe that both fractions are not defined if . So, we will assume
.
We multiply both numerator and denominator of the first fraction by 3 and we sum the two fractions:
We multiply both sides by :
We move everything to one side and solve the quadratic equation:
We check the solution:
which is true