(1)4x-1.2=10.8-4x (2)1.2x+8.5=5x-1 (3)1.8-2.4x=8x-0.72速喥
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(1)4x-1.2=10.8-4x 4x+4x=10.8+1.28x=12x=12÷8x=3/2(2)1.2x+8. 5=5x-1 5x-1.2x=0.5+13.8x=1.5x=1.5÷3.8x=15/38(3)1.8-2.4x=8x-0.728x+2.4x=1.8+0.7210.4x=2.52x=2.52÷10.4x=63/260