The equals sign indicates that the expressions on its two sides have the same value, rather than signaling that the number after it is the answer; this applies in sentences such as , , and . This understanding enables reasoning about equivalent expressions and unknowns in any position, using whole-number addition, subtraction, multiplication, and division relationships, and provides a foundation for solving equations and representing general relationships.
The equals sign means “has the same value as.” It does not mean “the answer comes next.”
Look at this example:
Find the value on the left side:
Find the value on the right side:
Both sides have the same value, . So the equation is true:
You can also write the same relationship in a different order:
The equals sign still means that both sides have the same value. When you see , compare the expressions on both sides.
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