Question

Materia:Ecuaciones algebraicas
X - 34 + 25 = 175

M + 8 - 6 = 24

P + 40 - 40 = -82

280 - h = 286

y + 90 - 74 = 423

L + 9 - 8 = 18 - 9

76 - 67 - y = 79

Answer 1

$x - 34 + 25 = 175 \\ x - 34 = 175 - 25 \\ x = 150 + 34 \\ x = 184$

$m + 8 - 6 = 24 \\ m = 22$

$p + 40 - 40 = - 82 \\ p = - 82$

$280 - h = 286 \\ h = 6$

$y + 90 - 74 = 423 \\ y = 423 + 74 \\ y = 497 - 90 \\ y = 407$

$l + 9 - 8 = 18 - 9 \\ l + 1 = 9 \\ l = 9 - 1 \\ l = 8$