20道分数方程

χ×5/8=1/12 χ×8=4/5 χ×5/4=5/8 χ×3/5=45 χ=2/15 χ=1/10 χ=1/2 χ=75 χ×2/3=75 χ×4/15=8 7χ÷1/2=3/5 9/8÷χ=1/4 χ=225/2 χ=30 χ=3/70 χ=9/2 χ×5/8=1/12 χ×8=4/5 χ×5/4=5/8 χ×3/5=45 χ=2/15 χ=1/10 χ=1/2 χ=75 χ×2/3=75 χ×4/15=8 7χ÷1/2=3/5 9/8÷χ=1/4 χ=225/2 χ=30 χ=3/70