Answer:
s=2/5j
Step-by-step explanation:
In case you just wanted the equation...
I just took the test
3/4 or 75% are boys
a+b/2*h
Here,
a = 12xcm
b= 15xcm
h= 7cm
(12+15)xcm/2*7
=27xcm*3.5
-16
(X + Y)
= (-3 + -5)
= -8
(X - Y)
= (-3 - -5)
= 2
Because they're still in brackets in this form:
(-8) (2)
You multiply them both and you'll get the answer:
hope this helped!