4 years ago

11/8a+5/4a=18 cuanto es ?

Mathematics

1 answer:

aleksandr82 [10.1K]4 years ago

5 0

Answer:

The Answer is: 47 1/4

Step-by-step explanation:

11/8a + 5/4a = 18

Create a common denominator for he coefficient of a:

11/8a + 2/2 * 5/4a = 18

11/8a + 10/8a = 18

21/8a = 18

Multiply both sides by the inverse of 21/8:

8/21 * 21/8a = 18 * 21/8

a = 378/8 or 189/4 or 47 1/4

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