Question

4)Determine o valor de x,sabendo que a//b//c.

Answer 1

□OLÁ! TD BEM?

$a) \frac{48}{x} = \frac{4}{7} \\ 4x = 336 \\ x = \frac{336}{4} \\ x = 84$

$b) \frac{2}{12} = \frac{3}{x} \\ 2x = 36 \\ x = \frac{36}{2} \\ x = 18$

$c) \frac{4}{18} = \frac{8}{x} \\ 4x = 144 \\ x = \frac{144}{4} \\ x = 36$

$d) \frac{20}{24} = \frac{x + 5}{x + 7} \\ 20x + 140 = 24x + 120 \\ 20x - 24x = 120 - 140 \\ - 4x = - 20( - 1) \\ 4x = 20 \\ x = \frac{20}{4} \\ x = 5$