Question

5) Resolver: 3(5x + 1) – 2(6x + 3) = 2(x –1) Rpta: ............................... 6) Resolver: 10 (x – 9) – 9(5 – 6x) = 2(4x – 1) + 5 + 10x Rpta: ............................... 7) Resolver: 6x (7 – x) = 36 – 2x (3x – 15) Rpta: ...............................

Answer 1

Respuesta:

1.  

3(5x+1)-2(6x+3)=2(x-1)

15x +3 - 12x - 6 = 2x - 2

3x - 3 = 2x - 2

x = 1

2.  

10x+90-45+54x=8x-2+5+10x

10x+54x-8x-10x=-2+5-90+45

64x-8x-10x=3-90+45

56x-10x=-87+45

46x=-42

X=-42/46

X=-21/23

3.

42x-6 x² = 36-6x²-30x

42x-6x²+6x²+30x = 36

72x = 36

X = 36/72

X=1/2

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