Step-by-step explanation:
x + y will have negative value as
x + y = -4 + (-8) = - 4 - 8 = - 12
A
They are both negative so you will keep the negative sign when you add.
36 girls
step-by-step explanation:
the 48 boys is 4 parts of the ratio
divide 48 by 4 to obtain one part of the ratio
= 12 ← 1 part of the ratio
3 parts = 3 × 12 = 36 ← number of girls