State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable

(o) $7 - x = 5$

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Solution

Checking for equation and identifying the variable

Given,
$7 - x = 5 \Rightarrow$ It is an equation.

The given equation has only one variable, i.e., x.

Hence, the given expression is an equation with one variable, x.

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Inequality

Standard XII Mathematics

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State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable (o) 7−x=5

Checking for equation and identifying the variable Given, 7−x=5⇒ It is an equation. The given equation has only one variable, i.e., x. Hence, the given expression is an equation with one variable, x.

State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable

(o) $7 - x = 5$

Checking for equation and identifying the variable

Given,
$7 - x = 5 \Rightarrow$ It is an equation.

The given equation has only one variable, i.e., x.

Hence, the given expression is an equation with one variable, x.