Fractions and Decimals

Discrete Mathematics

Differential Equations

Solved on Sep 26, 2023

Solve the linear equation $7y - 21 = 0$ for the unknown variable $y$ .

STEP 1

Assumptions1. The equation is $7y -21 =0$

STEP 2

First, we need to isolate the variable $y$ on one side of the equation. We can do this by adding $21$ to both sides of the equation.
$7y -21 +21 =0 +21$

STEP 3

implify the equation.
$7y =21$

STEP 4

Now, we need to solve for $y$ . We can do this by dividing both sides of the equation by $7$ .
$\frac{7y}{7} = \frac{21}{7}$

STEP 5

implify the equation to find the value of $y$ .
$y =3$ The solution to the equation $7y -21 =0$ is $y =3$ .

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