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2(3x-4)+5(6x-7)-7x=16(x+15)-10

Răspuns :

6x-8+30x-35-7x=16x+240-10
29x-43=16x+230
29x-16x=230+43
13x=273
x=21
6x-8 + 30x-35-7x = 16 x +240-10
 29x -43  = 16 x + 230
29x - 16 x = 230 + 43
13x=273
x = 273 /13
x = 21