Simple Linear Equations
ICSE · Class 7 · Mathematics
Flashcards for Simple Linear Equations — ICSE Class 7 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.
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Solve: x + 3 = 9
Answer
Step 1: Subtract 3 from both sides. x + 3 - 3 = 9 - 3 Step 2: Simplify. x = 6 Answer: x = 6…
Solve: x - 5 = 8
Answer
Step 1: Add 5 to both sides. x - 5 + 5 = 8 + 5 Step 2: Simplify. x = 13 Answer: x = 13…
Solve: 3x = 12
Answer
Step 1: Divide both sides by 3. 3x/3 = 12/3 Step 2: Simplify. x = 4 Answer: x = 4…
Solve: x/9 = 2
Answer
Step 1: Multiply both sides by 9. (x/9) × 9 = 2 × 9 Step 2: Simplify. x = 18 Answer: x = 18…
Solve: x + 2 = 6
Answer
Step 1: Subtract 2 from both sides. x + 2 - 2 = 6 - 2 Step 2: Simplify. x = 4 Answer: x = 4…
Solve: 2x + 5 = 11
Answer
Step 1: Subtract 5 from both sides. 2x + 5 - 5 = 11 - 5 2x = 6 Step 2: Divide both sides by 2. 2x/2 = 6/2 x = 3 Answer: x = 3…
Solve: x/3 - 8 = 10
Answer
Step 1: Add 8 to both sides. x/3 - 8 + 8 = 10 + 8 x/3 = 18 Step 2: Multiply both sides by 3. (x/3) × 3 = 18 × 3 x = 54 Answer: x = 54…
Why does transposing a positive term change its sign?
Answer
Transposing is a shortcut for keeping an equation balanced. A positive term moved to the other side becomes negative. Example: x + 3 = 6 Move +3 to the other side: x = 6 - 3 x = 3 The sign changes…
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