Question

Desarrolla las siguientes de primer grado Z (con porentesis)

A. 3×+(×+5)=5×-(3+2×)

B. 7×-4(2×-5)=3(5×-2)-6

C. 4-5(2×+1)= - 3(4×-5)​

Answer 1

Verified answer

Explicación paso a paso:

A/

[tex]3x + (x + 5) = 5x - (3 + 2x)[/tex]

[tex]3x + x + 5 = 5x - 3 - 2x[/tex]

[tex]3x + x - 5x + 2x = - 3 - 5[/tex]

[tex]x = - 8[/tex]

B/

[tex]7x - 4(2x - 5) = 3(5x - 2) - 6[/tex]

[tex]7x - 8x + 20 = 15x - 6 - 6[/tex]

[tex]7x - 8x - 15x = - 6 - 6 - 20[/tex]

[tex] - 16x = - 32[/tex]

[tex]x = 2[/tex]

C/

[tex]4 - 5(2x + 1) = - 3(4x - 5)[/tex]

[tex]4 - 10x - 5 = - 12x + 15[/tex]

[tex] - 10x + 12x = 15 - 4 + 5[/tex]

[tex]2x = 15[/tex]

[tex]x = 7.5[/tex]

espero te sirva saludos