What is a variable?, It's a number in an equations, It's a letter in an equation, It's a letter representing an unknown number in an equation, It's a number representing an unknown letter in an equation, In the equation 2x + 3y = 19, what is the variable?, x, =, y, Both x and y are variables , What branch of mathematics deals with equations with variables?, Geometry , Algebra , Physics , Calculus, Which symbol is present in every equation?, x, y, -, =, +, How do we figure out the value of a variable? , Add up all the numbers in the equation , Subtract all the numbers in the equation , Isolate the variable on one side of the equals sign , A variable has no set value, How would you solve the equation 4x=100, Divide each side by 4, Multiply each side by 4, Add 4 to each side, Subtract 4 from each side, In the equation 2x + 3y= 19, what is the constant?, 2, 3, 19, 5.

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