Answer:
Hamburgers + Cheeseburgers= 390
Hamburgers= x
Cheeseburgers= 2x
2x+x= 390
3x=390
x=130
Hamburgers sold= 130
The answer is 6 do not add the x or -
Answer:
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All four sides of a rhombus are always equal.
Answer:
x = -3
Step-by-step explanation: