3.35×6.4×2+6.7×3.6 18.7-3.375-6.625
(1)856+4293(2)5014-4293(3)2405÷(85-48)
7(4-x)=9(x-4) 128-5(2x+3)=73
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