Question

ajutatimi va rog !clasa 8

Answer 1

Numitorul comun este 12. Amplificam prima fractie cu 3, iar a doua cu 4. (3x+8x)/12 = 11x/12

Answer 2

$\frac{x}{4} + \frac{2x}{3} = \frac{x}{ {2}^{2} } + \frac{2x}{3} = \frac{3x + 4(2x)}{ {2}^{2} \times 3 } = \frac{3x + 4 \times 2x }{ {2}^{2} \times 3 } = \frac{3x + 8x}{ {2}^{2} \times 3 } = \frac{11x}{ {2}^{2} \times 3 } = \frac{11x}{4 \times 3} = \frac{11x}{12}$