Jack is using a ladder to hang lights up in his house.he places the ladder 5 feet from the base of his house and leans it so it
reaches a window 14 feet above the ground
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Sum indicates addition - you must add these fractions together. To add fractions, they must have a common denominator. The least common multiple of 6, 3, and 4 is 12. Multiply the fractions as follows to get a common denominator of 12.
1/6 × 2/2 = 2/12
2/3 × 4/4 = 8/12
1/4 × 3/3 = 3/12
Add the fractions (add their numerators).
2/12 + 8/12 + 3/12 = 13/12
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