At the start of a birthday party, there are 3 times more boys than girls. after 4 boys and 4 girls left the party, there were 4 times more boys than girls. how many boys were there at the start of the party

Step-by-step explanation:

Let

x------> number of boys at the start of the party

y-----> number of girls at the start of the party

we know that

------> equation A

-----> equation B

substitute equation A in equation B and solve for y

Find the value of x

 ------>

throw the computer

step-by-step explanation:

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}