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'y' is a variable. '15' is not.

[ y+15 ] is an expression in one variable.

Q: Does y plus 15 equal a variable or variables?

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(A/15)+(4/15)=(a/15) You can multiply both sides of the equal sign by fifteen to get A+4=a But you cannot simplify it any further because you have two variables.

15d + 7 = 7d + 15 is an equation in one variable, d.

Yes, 15 + 15 = 30

positive 10

Its 91

Related questions

In the expression y+15, there is one variable, the "y."

the variable is Y

(A/15)+(4/15)=(a/15) You can multiply both sides of the equal sign by fifteen to get A+4=a But you cannot simplify it any further because you have two variables.

25 plus 52 plus 15 is equal to 92.

37

15d + 7 = 7d + 15 is an equation in one variable, d.

Yes, 15 + 15 = 30

-17.

139

positive 10

15

Its 91