Question

6(x-3)=2x 0.5(3+0.25x)=4 3.4-2(x+1.2)=0.6 16x-271=3(5-2x) 这些题怎么做？请大家帮个忙！急!!!!!

谢谢！

Answer 1

6(x-3)=2x
3(x-3)=x
3x-9=x
2x=9
x=4.5

0.5(3+0.25x)=4
3+0.25x=8
0.25x=5
x=20

3.4-2(x+1.2)=0.6
2(x+1.2)=3.4-0.6
2(x+1.2)=2.8
x+1.2=1.4
x=0.2

16x-271=3(5-2x)
16x-271=15-6x
16x+6x=15+271
22x=286
x=13