Answer:

Step-by-step explanation:
x-7y = -49
i) move x to the right-hand side and change its sign
-7y = -49-x
ii) change the signs on both sides of the equation
7y = 49+x
iii) divide both sides of the equation by 7


iv) use the commutative property to reorder the terms
* commutative property: a+b = b+a

Answer:
260 species
Step-by-step explanation:
Answer:
- 4.9t + 22t= 1.5 is the answer
Distributive proeprty
a(b+c)=ab+ac
3(x+7)=3x+21
200, because wit the 10x15 already 150 so automatically answer above it wit the height