Expand: 3x - 12 + 2x = 5x + 6 - Coaching Toolbox
How to Solve the Equation: 3x - 12 + 2x = 5x + 6
How to Solve the Equation: 3x - 12 + 2x = 5x + 6
Solve algebraic expressions like 3x - 12 + 2x = 5x + 6 with confidence—this step-by-step guide breaks down the process of expanding, simplifying, and isolating variables to find the value of x. Whether you're a student learning algebra or seeking a refresher, understanding how to expand and simplify equations is essential for success in math and related STEM fields.
Understanding the Context
Understanding the Equation
At its core, the equation 3x - 12 + 2x = 5x + 6 requires simplifying both sides using the distributive and combining like terms. Expanding means identifying any parentheses (though none are present here), rearranging terms, and combining variables and constants.
Step 1: Combine Like Terms on Each Side
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Key Insights
Start with the left side:
3x + 2x - 12
This simplifies to:
5x - 12
Now the right side:
5x + 6 (already simplified)
Now rewrite the equation:
5x - 12 = 5x + 6
Step 2: Expand and Simplify
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In this case, no expansion is needed beyond combining like terms. The equation now matches:
5x - 12 = 5x + 6
Subtract 5x from both sides:
-12 = 6
Step 3: Analyze and Interpret
This result, -12 = 6, is a contradiction—meaning there is no solution that satisfies the original equation. Both sides simplify to unlike constants, so no value of x can make the equation true.
Why This Matters (Real-World Application)
Understanding why equations have no solution helps in many areas, from optimizing business models to debugging scientific experiments. Recognizing when equations resolve to contradictions strengthens problem-solving skills in algebra and beyond.
