Explore the foundational concepts of mathematics through engaging problem-solving and real-world applications in 7th grade.
An expression is a math phrase that can have numbers, variables, and operators, but no equals sign. For example, \( 3x + 5 \).
Equations are like math sentences showing that two expressions are equal. Solving equations means finding the value for the variable that makes the equation true.
Inequalities compare two expressions and show if one is greater, less, or not equal to the other. You use symbols like \( >, <, \geq, \leq \).
You use equations and inequalities to figure out how many chores you need to do to earn enough allowance, or to compare prices when shopping.
\( 2x + 4 = 10 \) — To solve, subtract 4 from both sides and then divide by 2.
\( x + 3 < 7 \) — To solve, subtract 3 from both sides to get \( x < 4 \).
Understand and solve different types of math statements: expressions, equations, and inequalities.