prosze o rozwiązania..
2x-= x+14
chodzi mi o treść tego równania
ps x=15 rozwiązanie
2x-(x-5)/10=x+14 /*10
20x-(x-5)=10x+140
20x-x+5=10x+140
19x-10x=140-5
9x=135
x=135:9
x=15
2x - x-5/10 = x+14 |*10
20x - x - 5 = 10x + 140
19x - 10x = 140 - 5
9x = 135 |:9
x = 15
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2x-(x-5)/10=x+14 /*10
20x-(x-5)=10x+140
20x-x+5=10x+140
19x-10x=140-5
9x=135
x=135:9
x=15
2x - x-5/10 = x+14 |*10
20x - x - 5 = 10x + 140
19x - 10x = 140 - 5
9x = 135 |:9
x = 15