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frez [133]
4 years ago
7

Ethan is 11 inches shorter than 3 times his little sister

Mathematics
2 answers:
Yuliya22 [10]4 years ago
8 0

Answer:

The answer is 30!!!

Step-by-step explanation: You take a calculator and add the fir

PtichkaEL [24]4 years ago
7 0

Answer:

30"

Step-by-step explanation:

We know:

E = 3*s - 11

E = 79"

Setting them both equal:

79 = 3s - 11

add 11 to both sides

79 + 11 = 3s - 11 + 11

Simplify

90 = 3s

divide both sides by 3

90 / 3 = 3s / 3

Simplify

s = 30"

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