Question

Calcule a raiz ou solução das seguintes equações: Grupo 2: a) 2 ⋅ (2x - 1) -6 ⋅ (1 - 2x) = 2 ⋅ (4x -5) d) 10 ⋅ (100 - x) + 2x = 3 ⋅ (x + 9) - 28 b) 2x + 3 ⋅ (x - 2) = 7x + 34 e) 5 ⋅ (x + 60) - 400,7 = 8 ⋅ (x - 40) c) 4 ⋅ (x - 2) = 4 + 2 ⋅ (x - 1) f) 7 ⋅ (2x - 50) - 4x = 10 ⋅ (51,9 - 0,1x)

Answer 1

Resposta:

4x-2-6+12x=8x-10

16x-8=8x-10

16x-8x=10-8

8x=-2

x=-2/8

x=-1/4