Question

Afla termenul necunoscut x e Q din proportiile:
$\frac{5}{11} =\frac{x}{2 ^{2} + 2 \times 3 ^{2} }$

$\frac{3 - 2x}{2} =\frac{4}{3}$
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Answer 1

Răspuns:

5/11 = x/2²+2•3² =>

5/11 = x/4+2•9

5/11 = x/4+18

5/11 = x/22

110 = 11x

11x = 110

x = 10

3-2x/2 = 4/3 =>

3(3-2x) = 8

9-6x = 8

-6x = 8-9

-6x = -1

x = 1/6

EVERGREEN

Answer 2

Explicație pas cu pas:

a) 5× (2²+ 2× 3²)= 11× x

5× (4+ 2×9) = 11× x

5×22= 11× x

110= 11× x => x= 110:11= 10

b) 3× (3-2x)= 8

9- 6x= 8

-6 x= -1 =>

$x = \frac{1}{6}$

Sper ca te am ajutat!