01-06-2020
Mathematics

contestada

A bag contains yellow marbles and blue marbles, 23 in total. The number of yellow marbles is 7 less than 2 times the number of blue marbles. How many yellow marbles are there?

Respuesta :

Kelemele Kelemele

02-06-2020

Answer:

8

Step-by-step explanation:

yellow marbles=2b-7

blue marbles=2b

2b+2b-7=23

4b=23+7

4b=30

b=30/4

b=7.5

yellow marbles=2b- 7

2 x 7.5 -7

15 - 7

=8

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