1.2x-2.4=3.61.2x=3.6+2.4x=6÷1.2x=5验算:1.2×5-2.4=3.6
1.2x-2.4=3.6 1.2x=3.6+2.4 1.2x=6 x=6÷1.2 x=5
当然是等于5了