(-3) - (-3) = - 6
3 + (-3) = 0
B and D and C in that order
It helps you know what to multiply and the product when you subtracting and adding fractions.
Answer:
11.x=16 12.x=37
Step-by-step explanation:
11.
20^2-12^2=x^2
256=x^2
x=√256
x=16
12.
13^2-5^2=y^2
144=y^2
y=12
/
y^2+35^2=x^2
12^2+35^2=x^2
1369=x^2
x=37
