直接写得数.2.5+3.7= 8.3﹣1.8= 25×6= 1﹣0.2=0.032×100= 76÷38= 0.1+7= 0.44﹣0.4=20÷1000= 4.8+6.2= 25×27×4= 316﹣98=
x×(+)=6x-10=8 8-x=x÷0.24=100
80÷x=2012x+8x-12=28 (2x-1)+10=371.6x+3.4x-x-5=27 (3x+5)÷2=(5x-9)÷3x-21×=4x÷=÷
3x+7x+10=903(x-12)+23=35 7x-8=2x+275x-18=3–2x
x+4=10 x-12=348x=96 4x-30=08.3x-2x=63x÷10=5.2
(x- 4.5)=7x-25%x=10