Question

Aflati x din proportiile: a) 44/11=8/x
b) 2x +1/2=x+4/3

Answer 1

$a) \frac{44}{11} = \frac{8}{x}$

$x = \frac{8 \times 11}{44} = \frac{8}{4} = 2$

$b) \frac{2x + 1}{2} = \frac{x + 4}{3}$

$2(x + 4) = 3(2x + 1)$

$2x + 8 = 6x + 3$

$2x - 6x = 3 - 8$

$- 4x = - 5 \: | \times ( - 1)$

$4x = 5$

$x = \frac{5}{4}$