Answer:
[tex]\large{\boxed{\text{the multiplication property of equality}}}[/tex]
Step-by-step explanation:
[tex]\dfrac{3x}{5}+5=20\qquad\text{subtract 5 from both sides}\\\boxed{\text{the subtraction property of equality}}\\\\\dfrac{3x}{5}+5-5=20-5\\\\\dfrac{3x}{5}=15\qquad\text{multiply both sides by}\ \dfrac{5}{3}\\\boxed{\text{the multiplication property of equality}}\\\\\dfrac{3\!\!\!\!\diagup^1}{5\!\!\!\!\diagup_1}\cdot\dfrac{5\!\!\!\!\diagup^1x}{3\!\!\!\!\diagup_1}=\dfrac{5}{3\!\!\!\!\diagup_1}\cdot15\!\!\!\!\!\diagup^5\\\\x=(5)(5)\\\\x=25[/tex]
