Question

me ayudan porfi
$\times - 215 = 674$
$\times - 354 = 634$
$- 12 \times = 144$

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Answer 1

x-215=674

x=674+215

x=889

x-354=634

x=634+354

x=988

-12x=144

x=144:(-12)

x=(-12)