Question

which equation has 3 as a solution? x + 3 = 26; 5x = 15; 4 + x = 12; 2x = 20

Explanation:

Step1: Solve the first equation

Solve $x + 3=26$ for $x$. Subtract 3 from both sides: $x=26 - 3=23$.

Step2: Solve the second equation

Solve $5x = 15$ for $x$. Divide both sides by 5: $x=\frac{15}{5}=3$.

Step3: Solve the third equation

Solve $4 + x=12$ for $x$. Subtract 4 from both sides: $x=12 - 4 = 8$.

Step4: Solve the fourth equation

Solve $2x=20$ for $x$. Divide both sides by 2: $x=\frac{20}{2}=10$.

Answer:

None of the given equations has $x = 9$ as a solution.