A bag contains yellow marbles and red marbles, 19 in total. The number of yellow marbles is 5 less than 3 times the number of re
d marbles. How many yellow marbles are there?
1 answer:
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Check the picture below
the triangles are similar, the angles are congruents then
so... just add them up, and divide by 2, or set them as rational
the triangles are similar, the angles are congruents then
so... just add them up, and divide by 2, or set them as rational