120
Lesson 120 of 500 · Extra Passages
⭐ 30 XPEquations One Variable Part 3
📖Story Brief #120
Equations in one variable are mathematical statements that show two expressions are equal.
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Equations in one variable are mathematical statements that show two expressions are equal. They contain one unknown value, usually represented by a letter, like 'x'. For example, in the equation 'x + 3 = 10', 'x' is the variable we want to find. To solve for 'x', you need to isolate it on one side of the equation. Start by subtracting 3 from both sides: 'x + 3 - 3 = 10 - 3'. This simplifies to 'x = 7'. Now, we know that if you add 3 to 7, you get 10, which confirms our solution is correct. Equations like this help us solve real-life problems, such as finding out how much money you need to buy something or how many items you have left. Understanding one-variable equations is a key skill in math!
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Question 1
1 of 2What is the variable in the equation 'x + 3 = 10'?
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