急,几道解方程1.-2x+1=02.-5x=703.-3/5x-8=14.0.2x-5=-35.-2x-1=-16.13=t/2+37.1/2=1/3+2x8.4-3/7y=139.x/10+4=110.ax+b=0(a+b不等于0)的解为11.5x-2=6x+712.2x+5=25-8x13.y-4=2/5y+1214.t/2+13=t/3+315.x-7=5+2x16.9x=6x-617.8z=4z+118.7

Question

急,几道解方程
1.-2x+1=0 2.-5x=70 3.-3/5x-8=1 4.0.2x-5=-3 5.-2x-1=-1 6.13=t/2+3 7.1/2=1/3+2x 8.4-3/7y=13 9. x/10+4=1
10.ax+b=0 (a+b不等于0)的解为 11.5x-2=6x+7 12.2x+5=25-8x
13.y-4=2/5y+12 14.t/2+13=t/3+3 15.x-7=5+2x 16.9x=6x-6
17.8z=4z+1 18.7x-6=-5x 19.x/2+1=x 20.y/3=y-4
21.1=x/2-5 22.0.48x-6=-0.02x 23.2x:3=6:5 24.8:3=4x:7
25.2x+3=11-6x 26.1/2-3x/2=8 27.x/3-5/3=4
28.7/5y=y+1
都是求x或y的
急急急急急急

Answer 1

x=1/2
x= -14
x= -15
x= 10
x= 0
t= 20
x= 1/12
y= -21
x= -30
x＝ -b/a ≠1
x= -9
x= 2
x= 80/3
t= -60
x= -12
x=  -2
z= 1/4
x= 1/2   
x= 2
y= 6
x= 12
x= 12
x= 1.8
x= 14/3
x= 1
x= -5
x= 17
y= 5/2