Rozwiaz. 1. 7 x-10 (x+5) = 12x -(6x+5)-(8x-6) 2.15x+12x=11 (x-5) + 6 (-2x+2)
7 x-10 (x+5) = 12x -(6x+5)-(8x-6)
7x-10x-50=12x-6x-5-8x+6
-3x+2x=1+50
-x=51 /*(-1)
x=-51
15x+12x=11 (x-5) + 6 (-2x+2)
27x=11x-55-12x+12
27x+x=-43
28x=-43 /:28
x=-43/28
x=- 1 15/28
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7 x-10 (x+5) = 12x -(6x+5)-(8x-6)
7x-10x-50=12x-6x-5-8x+6
-3x+2x=1+50
-x=51 /*(-1)
x=-51
15x+12x=11 (x-5) + 6 (-2x+2)
27x=11x-55-12x+12
27x+x=-43
28x=-43 /:28
x=-43/28
x=- 1 15/28