Answer:
Some of the other answers are good examples of solving a system of three equations in three unknowns, which is what this problem is asking. Though the simplest way to solve this problem is actually to notice that, if we sum the three equations, we get:
X + Y = 10
X + Z = 20
+ Y + Z = 24
----------------
2X + 2Y + 2Z = 54
Factoring out the 2, we have 2(X + Y + Z) = 54, and dividing both sides by 2 reveals that X + Y + Z = 27.
Step-by-step explanation:
hopefully this helps
Answer:
1 + 9 x 12 = 120
2 + 9 x 12 = 132
3 + 9 x 12 = 144
4 + 9 x 12 = 156
5 + 9 x 12 = 168
Step-by-step explanation:
Any of the ones on top, but there are tons of others too
I need to know the question that tells us what the other parts are.
Answer:
18
Step-by-step explanation:
-2bc=12-3ab
c=(3ab-12)/(2b)
