Question

Resolva as equações abaixo:
4× + 5 = 30
2× - 8= 3× + 12
5× + 1 = 8× + 4
× - 3= -2× -9
2(2× -2) = 2 - (-× + 3)

Answer 1

Resposta:

(30-5)/4 = x => x = 6,25

-8 - 12 = 3x - 2x => x = -20

-4 + 1 = 8x - 5x => 3x = -3 => x = -3/3 => x = -1

x + 2x = -9 + 3 => 3x = -6 => x = -6/3 => x = -2

4x - 4 = 2 + x - 3 => 4x - x = 4 + 2 - 3 => 3x = 3 => x = 3/3 => x = 1