Answer:
This is true
Step-by-step explanation:
Take for example 10=5x, you would divide both sides by 5 without changing anything to the equation.
In a case like 5=0x, you can't divide both sides by 0, so the solution is undefined.
the answer would be : 2,942
you multiply 623 times 4
Answer:??? I don't know
???
21
IDK how to do this one sorry