Question

Hallar: x + y+ z-w
(8 - 4 + 7 - 2) + (-13 + 5 -7) - (-4 - 3 + 8) = x
[(-4 + 12) + (7 - 3)] - [(9 + 6 - 5) - (8 -12)] = y
30 - (18 -19 + 21) - (23 - 20 - 2) - [12 - (8 - 5)] = z {87 - [(49 - 26) - 33]} - 85 + (12 - 7 + 8) = w​

Answer 1

Respuesta:

34

Explicación paso a paso:

$(8 - 4 + 7 - 2) + ( - 13 + 5 - 7) - ( - 4 - 3 + 8) = x \\ \\ (9) + ( - 15) - (1) = x \\ 9 - 15 - 1 = x \\ - 6 - 1 = x \\ - 7 = x$

$(( - 4 + 12) +(7 - 3)) - ((9 + 6 - 5) - (8 - 12)) = y \\ ((8) + (4)) - ((10) - ( - 4)) = y \\ (8 + 4) - (10 + 4) = y \\ 12 - 14 = y \\ - 2 = y$

$30 - (18 - 19 + 21) - (23 - 20 - 2) - (12 - (8 - 5)) = z \\ 30 - 20 - 1 - (12 - 3) = z \\ 30 - 20 - 1 - 9 = z \\ 0 = z$

$(87 - ((49 - 26) - 33)) - 85 + (12 - 7 + 8) = w \\ (87 - (23 - 33)) - 85 + (13) = w \\ (87 + 10) - 85 + 13 = w \\ 97 - 85 + 13 = w \\ 12 + 13 = w \\ 25 = w$

RESULTADOS INCOGNOTAS

• W = 25
• X = -7
• Y = -2
• Z = 0

HALLAR:

$x + y + z - w \\ - 7 + ( - 2) + 0 - 25 \\ - 7 - 2 + 0 - 25 \\ - 9 + 0 - 25 \\ - 9 - 25 \\ 34$