找到你今天要练的题。

If 5x =20, what is the value of 15x ?

The equation 46=2a +2b gives the relationship between the side lengths a and b of a certain parallelogram. If a =9, what is the value of b ?

What value of p satisfies the equation 5p +180=250?

One of a planet's moons orbits the planet every 252 days. A second moon orbits the planet every 287 days. How many more days does it take the second moon to orbit the planet 29 times than it takes the first moon to orbit the planet 29 times?

\( \frac{1}{4}\left(x+5\right)-\frac{1}{3}\left(x+5\right)=-7 \) 
What value of x is the solution to the given equation?

If \( 3x=30 \), what is the value of \( 3x−12 \)?

Which expression is equivalent to \( 34x+34y \)?

\( p+34=q+r \) 
The given equation relates the variables p, q, and r. Which equation correctly expresses p in terms of q and r? 

\( 3x+5\left(x+4\right)=76 \) 
What value of x is the solution to the given equation?

\( v=-\frac{w}{150x} \) 
The given equation relates the distinct numbers v, w, and x. Which equation correctly expresses w in terms of v and x?

\( 13x=112-x \) 
What value of x is the solution to the given equation?

6r = 7s +t
The given equation relates the variables r, s, and t. Which equation correctly expresses s in terms of r and t?