1/4(42-x) = 12-x Pomóżcie xD
(42 - x) = 12 - x
- = 12 - x / *4
42 - x = 48 - 4x
3x = 6 / :3
x = 2
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10,5-0,25x=12-x
-0,25+x=12-10,5
0,75x=1,5:0,75
x=2
(42 - x) = 12 - x
- = 12 - x / *4
42 - x = 48 - 4x
3x = 6 / :3
x = 2