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Сложение и вычитание алгебраических дробей с разными знамена

Authored by Татьяна Тищенко

Mathematics

7th Grade

Used 17+ times

Сложение и вычитание алгебраических дробей с разными знамена
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6 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 14x+12y\frac{1}{4x}+\frac{1}{2y}  

 y+2x4xy\frac{y+2x}{4xy}  

 1+2x4xy\frac{1+2x}{4xy}  

 y+24xy\frac{y+2}{4xy}  

 1+x4xy\frac{1+x}{4xy}  

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 2max+3nbx\frac{2m}{ax}+\frac{3n}{bx}  

 2m+3nabx\frac{2m+3n}{abx}  

 2bm+3anabx\frac{2bm+3an}{abx}  

 2am+3bnabx\frac{2am+3bn}{abx}  

 6mnabx\frac{6mn}{abx}  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 2ax23x\frac{2a}{x^2}-\frac{3}{x}  

 2a3x2\frac{2a-3}{x^2}  

 2a3x2x2\frac{2a-3x^2}{x^2}  

 2a3xx2\frac{2a-3x}{x^2}  

 2ax3ax2\frac{2ax-3a}{x^2}  

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 3x3y34x4y2\frac{3}{x^3y^3}-\frac{4}{x^4y^2}  

 3x4x4y2\frac{3x-4}{x^4y^2}  

 3x4yx4y3\frac{3x-4y}{x^4y^3}  

 34yx3y3\frac{3-4y}{x^3y^3}  

 1xy\frac{-1}{xy}  

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 a2xb3x2\frac{a}{2x}-\frac{b}{3x^2}  

 ab6x2\frac{a-b}{6x^2}  

 2ax3b6x2\frac{2ax-3b}{6x^2}  

 3ax2b6x2\frac{3ax-2b}{6x^2}  

 axb6x2\frac{ax-b}{6x^2}  

6.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

 5x23yx2y+10x+3y2x2y2\frac{5x^2-3y}{x^2y}+\frac{10x+3y^2}{x^2y^2}  

 5(xy+2)xy2\frac{5\left(xy+2\right)}{xy^2}  

 2(xy+5)xy2\frac{2\left(xy+5\right)}{xy^2}  

 5x2y6y2+6xx2y2\frac{5x^2y-6y^2+6x}{x^2y^2}  

 5x2y+10xx2y2\frac{5x^2y+10x}{x^2y^2}  

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