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挑战
Which expression is equivalent to \( \left(7nr^2+2nr\right)+\left(5n^2r+4nr\right) \) )?
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一元一次方程与代数求值挑战
\( v=-\frac{w}{123x} \)
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 -7(13- 5x) + 3= -8(13- 5x) + 25, what is the value of 13-5x?
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一元一次方程与代数求值进阶
What value of x is the solution to the equation 8x+ 56 = 36x?
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一元一次方程与代数求值进阶
If 4(x+3)=3(x+3)+ 56, what is the value ofx+ 3?
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一元一次方程与代数求值挑战
If \( 10+\frac{6\left(7-x\right)}{5}=\frac{4\left(7-x\right)}{3} \) , which equation must also be true?
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一元一次方程与代数求值进阶
During hibernation, American black bears do not eat or replenish calories. A certain black bear weighed 322 pounds when entering hibernation and lost weight at a rate of 0.7 pound per day. At this rate, how many days after entering hibernation did the black bear weigh 280 pounds?
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一元一次方程与代数求值挑战
x =4a(b+3)
The given equation relates the positive numbers a, b, and x. Which equation correctly expresses a in terms of b and x ?
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一元一次方程与代数求值进阶
z(4x − 7) = y − 5
The given equation gives the relationship between positive numbers x, y, and z. What is x in terms of y and z ?
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一元一次方程与代数求值进阶
14x − 3 = 2(6x + 1)
Which equation has the same solution as the given equation?
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一元一次方程与代数求值进阶
7m − 4 = 5p
The office of the City Mayor is planting trees in community parks around the city. The given equation describes the relationship between the number of maple trees, m, and the number of pine trees, p, planted in each community park. If 12 maple trees are planted in each community park, how many pine trees were planted in each community park?
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一元一次方程与代数求值进阶
Twenty-eight people attended the meeting, of these, 16 were men, and the rest were women. Ten people have to leave the meeting by 1:00 PM. If after 1:00 PM, there are still 9 men at the meeting, how many women are still at the meeting after 1:00 PM?
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