What is the elimination of 2a+3b=12 and 5a-b=13

2a plus 3b =12

5a minus 1b =13  multiply this by -3 to match 3b in equation 1

2a plus 3b =12

-15 plus 3b =-36

plus 15           plus 15

3b= -21

divide by 3  on both sides

b= -7

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1

step-by-step explanation: