1) 4х + 3 = x — 9; 13) 7х + 3 = 3х + 27; 5) 42 – х = 2х + 9;
2) 12х – 19 = 8 – x; 4) 3х – 7 = 2х + 3; 6) 20 + 3x = 4 – х. решите пж​
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