第五单元解方程习题
一、解方程
20X-50=50 28+6X=88 32-22X=10 3X+5X=48
24-3X=3 99X=100-X X+3=18 X-6=12
(0.5+X)+X=9.8÷2 12X-8X=4.8 7.5×2X=15 4(X-5.6)=1.6
14X-8X=12 56-2X=20 7(6.5+X)=87.5 12X=300-4X
30÷X+25=85 1.4×8-2X=6 6X-12.8×3=0.06 15X=3
0.273÷X=0.35 1.8X=0.972 5x+34=3x+54 2(X+X+0.5)=9.8
7x-27=13-3x 7.4-(x-2.1)=6 x+(3-0.5)=12
5(x+3)=35 x+3.7x+2=16.1 14x+3x-1.2x=158
x-13.4+5.2=1.57 5x+2x=1.4+0.07 7x+3×1.4x=0.2×56
0.3÷0.15+25x=12 14x÷3=6.3×4 4x+2(5-x)=32
7x+3×1.4x=0.2×56 5×(3-2x)=2.4×5 2x+4(35-x)=94
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