Answer:
I suggest using the app called Cymath it helps and is completely free
This kind of hard to explain without an example, so I'll do my best...
All you have to do is isolate a variable on one side of the equals sign without a coefficient. Ex: x=2y+3 The x is all alone and ready to go into the second equation.
Substitute into the second equation. Ex: 2x+5=3 Substitute: 2(2y+3)+5=3
I hope this helps!
Answer:
r = s
/2 - 3
x
/2
or
x = s
/3 − 2
r/
3
Step-by-step explanation:
Answer:
3
Step-by-step explanation: