Ответ:
- \(2x=5x+9\)
\(2x-5x=9\)
\(-3x=9\) - \(6x-8.4=-8.4\)
\(6x=-8.4+8.4\)
\(6x=0\) - \(-1.5x+4=-4.3x-9\)
\(-1.5x+4.3x=-9-4\)
\(2.8x=-13\) - \(19x+14=16y+14\)
\(19x-16y=14-14\)
\(19x-16y=0\) - \(-x+24y-9=x-17y+23\)
\(-x-x+24y+17y=23+9\)
\(-2x+41y=32\) - \(54.3a-18.5b=-11.3b-78\)
\(54.3a-18.5b+11.3b=-78\)
\(54.3a-7.2b=-78\)
