5.6x=17.28-4x
9.6x=17.28
x=1.8
3(x+2)=4(x+1)
3x+6=4x+4
x=2
81x-342=76(x-2)
81x-342=76x-152
5x=190
x=38
2(x-4)=3(x-12)
2x-8=3x-36
x=28
9.1-3x=4x+7
7x=2.1
x=0.3
5(x+2)=3(x+4)
5x+10=3x+12
2x=2
x=1
4(x-1.2)=1.5x+5.2
4x-4.8=1.5x+5.2
2.5x=10
x=4
4分之x+3=3分之x-2又3分之2
1/4x+3=1/3x-8/3
1/12x=17/3
x=68