Question

3 + 5 (9 - x) = 7 (x - 7) + 1

Answer 1

$3 + 5(9 - x) = 7(x - 7) + 1 \\ 3 + (5 \times 9) - (5 \times x) = (7 \times x) - (7 \times 7) + 1 \\ 3 + 45 - 5x = 7x - 49 + 1 \\ 48 - 5x = 7x - 48 \\ - 5x - 7x = - 48 - 48 \\ - 12x = - 96 \\ x = \frac{ - 96}{ - 12} \\ x = 8$

Answer 2

Respuesta:

3+5(9-x)=7(x-7)+1

3+45-5x=7x-49+1

48-5x=7x-48

-5x-7x=-48-48

-12x=96

x=96/(-12)

x=8

Explicación paso a paso: