Question

calcule o valor de X em cada caso:

Answer 1

$h)5x - 70 = 2x + 20 \\ 5x - 2x = 20 + 70 \\ 3x = 90 \\ x = 30$
$i)80 + 30 + x = 180 \\ x = 180 - 80 - 30 \\ x = 70$
$j)45 + 5x + 4x = 180 \\ 5x + 4x = 180 - 45 \\ 9x = 135 \\ x = 15$
$k)3x - 50 + x + 10 + x = 180 \\ 3x + x + x = 180 + 50 - 10 \\ 5x = 220 \\ x = 44$