SOLUTION: 5x + 7 = -3, which one is the variable? 1) 5 2) x 3) 7 4) -3 5) 5x + 7

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Question 1181300: 5x + 7 = -3, which one is the variable?
1) 5
2) x
3) 7
4) -3
5) 5x + 7
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

recall:
A variable is a symbol for a number we don't know yet. It is usually a letter like x or+y.
A number on its own is called a constant (in your case 7 and -3.
A coefficient is a number used to multiply a variable (in your case 5x means 5 times x, so 5 is a coefficient)
A sign used between variables and constant is operator (in your case operator is +).


so, in your case variable is x
answer: 2) x