A) The least common denominator is 12. Both 4 and 3 go into 12 evenly.
b) The least common denominator is 40. Both 5 and 8 go into 40 evenly.
4(-5y) + 2y = 180
-20y + 2y = 180
-18y = 180
y = -10
x = 50
(9x3)-9=18
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It’s 30 months because 2.5 years old times 12 months in a year is 30
