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x = 0
b) -x + 68 = 8 - 16x
15 x = -60
x = -4
c) 14+ 9x = -61x -401
415 = - 70x
x = -415/70
d) -4 x + 9 = - x - 13
- 3x = -22
x = 22/3
e) 11y - 81 = 72y + 102
-183 = 61y
y = -183/61
y = -3
f) -88x = 84x - 172
172 x = 172
x = 1
Espero haberte ayudado.