What is the variable in the equation 5z + 2 = 17?

Sep 27, 2011 ... Never divide both sides of the equation by a variable, even if you're doing it to try to solve a rational equation, because there's a very real danger that you ... Understanding algebraic notation. Algebraic notation presents information in a concise way. For example, when variables are multiplied they are written next ... To solve a system of three linear equations, we want to find the values of the variables that are solutions to all three equations. Expressions and variables ... An algebraic expression comprises both numbers and variables together with at least one arithmetic operation. ... To evaluate an ... Apr 13, 2011 ... FACT: The variable "x" was popularized by the famous "Malcolm X", who did not know his true family name and refused to use his slave name, and ... Usiskin, Zalman. “Conceptions of School Algebra and Uses of Variables.” In Algebraic Thinking, Grades K–12: Readings from NCTM's School-Based Journals and Other ... A variable is a letter (we often use x and y) that represents or is a holding place for a number. In statistical analysis, we will define variables and ... This series covers differential calculus, integral calculus, and power series in one variable. It can be started at any point in the sequence for those with ... Jun 9, 2020 ... Welcome to "What is a Variable?" with Mr. J! Need help with variables? You're in the right place! Whether you're just starting out, ... We examined how symbols—specifically variables versus numbers—and students' algebraic knowledge impacted seventh graders' problem-solving strategies ...