一、解方程 。
5x+8x=260 x÷3=4.6+5.6 5x+15=65 2x-20=4
m÷0.7=1.2 8x-3x=105 16+8x=40 y÷2.4=1.8
50-5+4x=61 x-12.5=7.6 10.5-2.5x=3 x÷7.5=4.6 +9.4=39.4
8x-20=540 2x+2.4×5=20
x-2.4÷2=1.8 ÷4=100
4x+12=60 6y-4=44
x-120=62 -5x=2 6.8+a=25.6 x÷(36+18)=10.8
y-68=76 6y=72 32÷x=10 36+1.2x=36 5x-2.7x=9.2 22-7x=4x
7x+3x=2.8 2x-9=11 x x÷0.56=7 105÷x=5 4.2+x+1.5=26.8 19.2+24x=163.2 (32+y) m+2m=96 8x-x=147 x÷0.4=2.2 8x-7.5+1.5=42
1.6×25
2x+5.3x=76
X+20-18=15 X+20-18=15 X+20-18=15 8X+6=30
x-6=9+3 9+3=17-x 16+2x =24+x 4x=16
4x+2=18 6x-2=3x+10
105÷x=21 2.1+x+1.5=13.1
24-x =15+2x x+1.5×3=10 2+5x=18+3x x-1.5÷3=2.7