小学六年级数学总复习解方程练习题

.8  25000+x=6x Р3200=450+5X+X  X-0.8X=6  12x-8x=4.8 Р7.5*2X=15  x+5.6=9.4  x-0.7x=3.6 Р91÷x =1.3  7(x-2)=2x+3  18(x-2)=270 Р30÷x+25=85  1.4×8-2x=6  6x-12.8×3=0.06 Р5×3-x÷2=8  4(x-5.6)=1.6  7(6.5+x)=87.5 Р150×2+3x=690  1/3x+5/6x=1.4  3/7+6/20X=5Р0.7(x+0.9)=42 1.3x+2.4×3=12.4 x+(3-0.5)=12 Р3x+ 7x +10 = 90 3(x - 12)+ 23 = 35 7 7x-8=2x+27 Р5x -18 = 3–2x 7.4-(x-2.1)=6 (7x - 4)+3(x - 2)= 2x +6 Р 12x+8x-12=28 3(2x-1)+10=37 1.6x+3.4x-x-5=27 Р2(3x-4)+(4-x)=4x (3x+5)÷2=(5x-9)÷3 Р3X= X÷= ÷X= Р=30% X = X-0.25= Р?РX×=20× 50% X + X = 3.6 25% X + 15%X = РX - 15%X = 68 X- X = X+X=121 Р РX+X= X + X = 4 X+X=20Р Р Р6X+5 =13.4 4 X-6=38 X+=Р4 X-3 ×9 = 29 5X-3×= 4X-6×=2Р0.36×5- X = X - 0.8 X = 16+6 ( X - 4.5) = 7 РX÷=12 2(X-2.6)=8 X-X=РX×( + )= X-0.375 X = 20 X– 8.5= 1.5 Р X - X -4= 21 4+0.7X=102 X - 25% X = 10