Unit 4 · Class 7 IB MYP · Formula Sheet

Linear Equations Formulas — Class 7 IB MYP

Formulate and solve linear equations and inequalities in real-world contexts.

Key Formulas

One-Step

x + a = b \implies x = b - a

Two-Step

ax + b = c \implies x = \dfrac{c - b}{a}

Equations with Fractions

\dfrac{x}{a} = b \implies x = ab

Worked Examples

1Using: Supplementary Angles

If one angle is 65 degrees, find its supplement.

Step 1: Supplement = 180 - 65

Step 2: = 115 degrees.

Answer: 115 degrees

2Using: Vertically Opposite

Two lines intersect. If one angle is 40 degrees, find the vertically opposite angle.

Step 1: Vertically opposite angles are equal.

Step 2: The angle = 40 degrees.

Answer: 40 degrees

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More Class 7 IB MYP Formulas

Rational NumbersPercentages & Proportional ReasoningAlgebraic ExpressionsAngle RelationshipsTransformationsArea & Perimeter

Frequently Asked Questions

How many formulas are in Class 7 IB MYP Linear Equations?+
There are 3 formulas in the Linear Equations chapter for Class 7 IB MYP. Each formula is essential for solving problems in this topic.
How to remember Linear Equations formulas easily?+
Practice regularly with worked examples, group related formulas together, and use SparkEd's interactive practice mode to reinforce your memory through problem-solving.
Are these Linear Equations formulas enough for exams?+
Yes, these formulas cover the complete IB MYP Class 7 syllabus for Linear Equations. Practice applying them to different types of questions for full exam readiness.

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SparkEd Maths provides free formula sheets for Class 1-10 across 7 education boards. All formulas are aligned to the 2025-26 syllabus.