-32 + 17x = -11x
+ 11x +11x
-32 + 28x = 0
+32 +32
28x = 32
/28 /28
x = 32/28 or 8/7
<span>With a boys to girls ratio of 8:7, this means 8/15 of the campers are boys and 7/15 of the campers are girls.
We are told that there are 195 total campers.
To find # of boys: 195 (the total # of campers) x 8/15 (fraction of the campers that are boys) = 104 boys
To find # of girls: 195 (total # of campers) x 7/15 (fraction of the campers that are girls) = 91 girls
Note: If you do not know how to multiply by fractions, let me know, I have another trick that takes more time but doesn't require the use of fractions.
</span>
Rewriting the equation in the form y=mx+c
-x+3y=9
3y=x+9
y=
Gradient is 1/3
Since parallel lines have similar gradients,
y+3=
y+3=
y=