2(x+x+0.5)=9.82(2x+0.5)=9.82x+0.5=9.8÷22x+0.5=4.92x=4.9-0.52x=4.4x=4.4÷2x=2.2
x+x+0.5=4.92x=4.4x=2.2
4x+1=9.84x=8.8x=2.2
4x+1-1=9.8-1 4ⅹ=8.8 4x÷4=8.8÷4 ⅹ=2.2
2x+0.5=4.92x=4.4x=2.2