Question

Știind că: ...........

Answer 1

Răspuns:

CCOROANA??

b)

$\frac{3 \times 4 + 2 \times 5}{2 \times 5} = \frac{12 + 10}{10} = \frac{22}{10} = \frac{11}{5}$

c)

$\frac{4 \times 3 - 5 \times 2}{5 \times 2} = \frac{12 - 10}{10} = \frac{2}{10} = \frac{1}{5}$

e)

$\frac{5 \times 2}{3 \times 7 - 5 \times 2} = \frac{10}{21 - 10} = \frac{10}{11}$

f)

$\frac{2 \times 3 - 4 \times 1}{4 \times 1} = \frac{6 - 4}{4} = \frac{2}{4} = \frac{1}{2}$

Answer 2

Răspuns:

b)3x+2y/2y=3×4+2×5/2×5=12+10/10=22/10=2,2

c)4x-5y/5y=4×3-5×2/5×2=12-10/10=2/10=0,2

e)5x/3y-5x=5×2/3×7-5×2=10/21-10=10/11 (nu stiu in reacție zecimală)

f)2y-4x/4x=2×3-4×1/4×1=6-4/4=2/4=0,5

Explicație pas cu pas:

Sper ca te-am ajutat!!