How to Solve $ 4x - 7 = 89 $: A Simple Step-by-Step Guide

Solving linear equations like $ 4x - 7 = 89 $ is an essential math skill used in classrooms, science, and real-world problem solving. Whether you're a student learning algebra or someone brushing up on fundamentals, understanding how to isolate variables step by step makes math easier and more intuitive.

In this article, weโ€™ll break down how to solve the equation $ 4x - 7 = 89 $ in simple, clear terms so you can confidently work through similar problems.

Understanding the Context


What is the Equation $ 4x - 7 = 89 $?

The equation $ 4x - 7 = 89 $ is a linear equation containing one variable, $ x $. Our goal is to find the value of $ x $ that makes the equation true.


Key Insights

Step-by-Step Solution

Step 1: Eliminate the constant on the left side

Start by removing the $-7$ from the left side. To do this, add 7 to both sides of the equation:
$$
4x - 7 + 7 = 89 + 7
$$
Simplifying both sides gives:
$$
4x = 96
$$

Step 2: Solve for $ x $

Now, divide both sides by 4 to isolate $ x $:
$$
rac{4x}{4} = rac{96}{4}
$$
This simplifies to:
$$
x = 24
$$


Final Answer

Final Thoughts

The solution to the equation $ 4x - 7 = 89 $ is $ x = 24 $. This means when $ x $ equals 24, the expression $ 4x - 7 $ equals 89.


Tips for Mastering Linear Equation Solving

  • Always perform the same operation on both sides of the equation to keep it balanced.
  • Begin by working toward isolating $ x $ โ€” first eliminate constants, then deal with coefficients.
  • Always verify your answer by substituting $ x $ back into the original equation.
  • Practice regularly with diverse equations to build speed and accuracy.

Why This Equation Matters

Solving equations like $ 4x - 7 = 89 $ is more than just algebra โ€” it builds logical thinking and problem-solving skills used in science, computer programming, finance, and engineering. Understanding these basics prepares you for advanced mathematics and real-life applications.


Summary

  • Original equation: $ 4x - 7 = 89 $
  • Subtract 7 from both sides: $ 4x = 96 $
  • Divide both sides by 4: $ x = 24 $
  • Solution verified: checks out in original equation
  • Practice = confidence!