ISEE Lower Level Mathematics Achievement Flashcards: Solving Simple Equations

What this deck covers

This deck focuses on Solving Simple Equations, giving you a quick way to review the definitions, rules, and examples that matter most for ISEE Lower Level Mathematics Achievement.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: What operation should you use to undo multiplying by $5$ in the equation $5x = 30$?

Answer: Divide both sides by $5$. To isolate $x$, perform the inverse operation of multiplication by dividing both sides by $5$, preserving equality.

Flashcard 2: What is the solution for $x$ in the equation $6x = 42$?

Answer: $x = 7$. Divide both sides by $6$ to isolate $x$, which reverses the multiplication.

Flashcard 3: What operation should you use to undo adding $7$ in the equation $x + 7 = 12$?

Answer: Subtract $7$ from both sides. To isolate $x$, perform the inverse operation of addition by subtracting $7$ from both sides, maintaining the equation's balance.

Flashcard 4: What is the solution for $x$ in the equation $x - 4 = 11$?

Answer: $x = 15$. Add $4$ to both sides to isolate $x$, reversing the subtraction and finding the value.

Flashcard 5: What is the solution for $x$ in the equation $9 - x = 2$?

Answer: $x = 7$. Subtract $9$ from both sides, then multiply by $-1$ to isolate $x$.

Flashcard 6: What is the solution for $x$ in the equation $x + 9 = 15$?

Answer: $x = 6$. Subtract $9$ from both sides to isolate $x$, as this undoes the addition and solves the equation.

Flashcard 7: What is the solution for $x$ in the equation rac{x}{8} = 3?

Answer: $x = 24$. Multiply both sides by $8$ to isolate $x$, undoing the division.

Flashcard 8: What is the solution for $x$ in the equation $0.5x = 9$?

Answer: $x = 18$. Divide both sides by $0.5$, which is equivalent to multiplying by $2$, to isolate $x$.

Flashcard 9: What is the solution for $x$ in the equation $x + x = 14$?

Answer: $x = 7$. Combine like terms to get $2x = 14$, then divide both sides by $2$ to isolate $x$.