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

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) (Show Source): You can put this solution on YOUR website!

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

so, in your case variable is
answer: 2)

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