A

1003136403

Level: 
A
Choose the operation, which most effectively eliminates fractions from the equation. \[ \frac{2x}{x^2-25}+\frac{3+x}{5-x}=\frac{x+1}{x+5} \]
multiplying both sides by \( x^2-25 \)
multiplying both sides by \( (5-x)\left(x^2-25\right) \)
multiplying both sides by \( x^2+25 \)
multiplying both sides by \( (5-x)(x+5)\left(x^2-25\right) \)

1003136402

Level: 
A
Choose the operation, which most effectively eliminates fractions from the equation. \[ \frac2{x^2-9}+\frac3{3-x}=\frac{x+1}{2x} \]
multiplying both sides by \( 2x\left(x^2-9\right) \)
multiplying both sides by \( 2x\left(x^2-9\right)(3-x) \)
multiplying both sides by \( 2x^2-9 \)
multiplying both sides by \( 18x^2 \)

1003136401

Level: 
A
Choose the operation, which most effectively eliminates fractions from the equation. \[ 3+\frac2{x+4}=\frac1{3x+12} \]
multiplying both sides by \( 3x+12 \)
multiplying both sides by \( (x+4)(3x+12) \)
subtracting \( \frac2{x+4} \) from both sides
multiplying both sides by \( 12x \)

1103124503

Level: 
A
The picture shows graphs of functions: \[ \begin{aligned} f(x)&=\frac2x\text{, }x\in\left[\frac12;4\right], \\ g(x)&=\frac{-3}x\text{, }x\in\left[\frac12;4\right], \\ h(x)&=\frac4x\text{, }x\in\left[\frac12;4\right]. \end{aligned} \] Choose the correct statement.
The function \( f \) is graphed in blue and the function \( h \) is graphed in green.
The function \( g \) is graphed in red and the function \( f \) is graphed in green.
The function \( f \) is graphed in green and the function \( h \) is graphed in blue.
The function \( g \) is graphed in green and the function \( f \) is graphed in blue.