5272道题目5525 条题源记录 · 相同内容已合并
一元一次方程与代数求值进阶
What value of n is the solution to the equation \( 9n-10=2n+25 \)?
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一元一次方程与代数求值挑战
If \( 2+\frac{\left(1-x\right)}{2}=\frac{-2\left(1-x\right)}{3} \), what is the value of \( 1−x \)?
原库参考解析
一元一次方程与代数求值挑战
\( \frac{2}{5}x+\frac{2}{3}y=5 \)
Which table gives three values of x and their corresponding values of y for the given equation?
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一元一次方程与代数求值进阶
If \( 6x+36=54 \), what is the value of \( x+6 \)?
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一元一次方程与代数求值进阶
\( b-49=\frac{x}{y} \)
The given equation relates the positive numbers b, x, and y. Which equation correctly expresses x in terms of b and y?
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一元一次方程与代数求值进阶
If \( \frac{2a}{b}=6.5 \) and \( \frac{a}{bn}=26 \), what is the value of n?
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一元一次方程与代数求值进阶
If \( 3x=8 \), what is the value of \( 21x \)?
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一元一次方程与代数求值挑战
If \( \frac{6}{7}p+42=84 \), what is the value of 7p?
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一元一次方程与代数求值挑战
If \( 5(x+4)=4(x+4)+58 \), what is the value of \( x+4 \)?
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一元一次方程与代数求值进阶
If \( \frac{x-17}{18}=\frac{x-17}{6} \), what is the value of \( x+17 \)?
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一元一次方程与代数求值挑战
\( R=\frac{0.43l}{A} \)
The given equation relates the resistance R, in ohms, of a wire to its length \( l \) , in meters, and its cross-sectional area A, in square meters. Which equation correctly expresses the length, in meters, of the wire in terms of its resistance, in ohms, and its cross-sectional area, in square meters?
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一元一次方程与代数求值挑战
If \( \left(\frac{1}{2}x-\frac{21}{2}\right)^2-81=0 \) , what is the value of \( \left(x-21\right)^2 \) ?
原库参考解析
