X - 15%X = 68 3.5X＋1.8＝12.3 3.6X÷2＝2.16 0.8X－4＝1.6
5X÷2＝10 X－0.25X＝3 4+0.7X=102 X-0.125X=8 x－0.375x=3/4
5 X－2.4×5＝8 15X÷2＝60 4X＋X＝3.15 3.4X＋1.8＝8.6
5X－X＝2.4 1.5X－X＝1 6.6X－6X＝1.8 x - 0.8x = 16+6
X＋25%X=90 12x=300-4x 30÷x+25=85 410-3x=170 3(x+0.5)=21 0.5x+8=43 6x-3x=18 1.5x+18=3x 5×3-x÷2=8 9x-40=5 x÷5+9=21 48-27+5x=31 10.5+x+21=56 x+2x+18=78 (200-x)÷5=30 (x-140)÷70=4 0.1(x+6)=3.3×0.4 4(x-5.6)=1.6 7(6.5+x)=87.5 (27.5-3.5)÷x=4 x+19.8=25.8 5.6x=33.6 9.8-x=3.8 75.6÷x=12.6 5x+12.5=32.3 5(x+8)=102 x+3x+10=70 3(x+3)=50-x+3 5x+6=11 2x-8=10 1/2x-8=4 12＋34x=56 22－14x=12 54-X=24 7X=49 126÷X=42 13+A=28.5 2.4X=26.4 70%X + 20%X = 3.6 2X＋7X＝9/10 180＋6X＝330 2.2X－1＝10 X－0.8X＝10 X＋ 2/5X＝21