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
If \( -7\left(13-5x\right)+3=-8\left(13-5x\right)+21 \), what is the value of \( 13−5x \)?
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一元一次方程与代数求值进阶
The equation \( h=\frac{9\left(v-273.15\right)}{5}+32 \) gives the corresponding temperature h, in degrees Fahrenheit, of any substance that has a temperature of v kelvins, where \( v>0 \). If a substance has a temperature of 539.33 degrees Fahrenheit, what is the corresponding temperature, in kelvins, of this substance?
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一元一次方程与代数求值进阶
If\( 48=18+2\left(x-9\right) \), what is the value of\( 2\left(x-9\right) \)?
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一元一次方程与代数求值进阶
If \( 5\left(3x+6\right)=3\left(3x+6\right)+78 \), what is the value of\( 3x+6 \)?
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一元一次方程与代数求值进阶
If \( 8x+7=79 \) , what is the value of \( 80x+70 \)?
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一元一次方程与代数求值挑战
\( v=-\frac{w}{188x} \)
The given equation relates the distinct positive numbers v, w, and x. Which equation correctly expresses w in terms of v and x?
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一元一次方程与代数求值挑战
If \( 8\left(x+7\right)=7\left(x+7\right)+68 \), what is the value of \( x+7 \)?
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一元一次方程与代数求值挑战
Which expression is equivalent to \( 10\left(x+3\right) \)?
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一元一次方程与代数求值挑战
\( 3.5c+7d=266 \)
The given equation describes the relationship between the number of cats, c, and the number of dogs, d, that can be cared for at a pet care business during a week. If the business cares for 38 dogs during a week, how many cats can it care for during this week?
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一元一次方程与代数求值进阶
If\( 9-4\left(4-9x\right)=2-5\left(4-9x\right) \), what is the value of\( 4−9x \)?
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一元一次方程与代数求值进阶
If \( \frac{x-16}{27}=\frac{x-16}{9} \), what is the value of \( x+16 \)?
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一元一次方程与代数求值挑战
\( PC=N\left(44-C\right) \)
The given equation relates the variables P, N, and C. Which expression represents the value of C for distinct positive values of P and N?
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