Equivalent Equations

Which equation is equivalent to the equation $$5x+30=45$$  ?

The entrepreneurship club is ordering potted plants for all 36 of its sponsors. One store charges $8.50 for each plant plus a delivery fee of $20. The equation  $$320=x+7.50\left(36\right)\$$  represents the cost of ordering potted plants at a second store.

What does the x represent in this situation?

Kiran says that a solution to the equation  $$x+4=20\$$  must also be a solution to the equation  $$5\left(x+4\right)=100$$  .  Select the most convincing reason why this is true.

Select all equations that are equivalent to

$$3\left(x+6\right)=4x+7$$  .

Which equation is equivalent to the equation $$5x+30=45$$  ?

Diegos's age is n is 5 more than 2 times his sister's age s. This situation is represented by the equation d=2s+5. Which equation is equivalent to the equation d=2s+5?

Which equations are equivalent to 1 = 11x - 7 ?

Which equation(s) are equivalent to  $$x-y=-18$$  ?