Solve for y. 2y + 21 = 20

Subtract 21 from both sides: Isolate the variable term on one side by subtracting 21 from both sides of the equation. 2y + 21 - 21 = 20 - 21Simplify the equation: Simplify both sides of the equation. 2y = -1Divide by 2: Divide both sides by 2 to solve for y. y = -1 / 2

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Solve for $y$ . $\newline$ $2y + 21 = 20$

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Algebra 1

Solve linear equations: mixed review

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Q. Solve for

y

\newline

2y + 21 = 20

Subtract $21$ from both sides: Isolate the variable term on one side by subtracting $21$ from both sides of the equation. $\newline$ $2y + 21 - 21 = 20 - 21$
Simplify the equation: Simplify both sides of the equation. $2y = -1$
Divide by $2$ : Divide both sides by $2$ to solve for $y$ . $y = -\frac{1}{2}$