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一元一次方程与代数求值挑战

\( 4xy+5xt-17yt=0 \)
In the given equation, x and y are positive and x < y. Which equation correctly expresses t in terms of x and y?

一元一次方程与代数求值挑战

If \( 4(2t-5)+t=40+7t \), what is the value of 2t?

一元一次方程与代数求值基础

\( 3j+14k=m \)
The given equation relates the numbers j, k, and m. Which equation correctly expresses k in terms of j and m?

一元一次方程与代数求值基础

\( 2.7x=270 \)
What value of x is the solution to the given equation?

一元一次方程与代数求值进阶

The equation \( x+y=1,440 \) represents the number of minutes of daylight (between sunrise and sunset), x, and the number of minutes of non-daylight, y, on a particular day in Grand Rapids, Michigan. If this day has 740 minutes of daylight, how many minutes of non-daylight does it have?

一元一次方程与代数求值进阶

If \( \frac{x}{8}=5 \), what is the value of \( \frac{8}{x} \)?

一元一次方程与代数求值进阶

If \( 6-24x=3 \), what is the value of \( 1−4x \)?

一元一次方程与代数求值基础

\( \frac{7}{x+2}=\frac{7}{13} \)
What value of x is the solution to the given equation?

一元一次方程与代数求值基础

\( \frac{r}{31}=s+t \)
The given equation relates the quantities r, s, and t. Which equation correctly expresses r in terms of s and t?

一元一次方程与代数求值基础

Which expression is equivalent to \( 7x^3+2+8 \)?

一元一次方程与代数求值基础

\( 2.6x=2,600 \)
What value of x is the solution to the given equation?

一元一次方程与代数求值挑战

\( P=N(57-C) \)
The given equation relates the positive numbers P, N, and C. Which equation correctly expresses C in terms of P and N?