Question

解方程．4x+12=60  ...

解方程．4x+12=60 m+2m=96 8x-x=1476y-4=44 x-120=62 x÷0.4=2.2．

Answer 1

（1）4x+12=60
     4x+12-12=60-12
           4x=48
         4x÷4=48÷4
             x=12

（2）m+2m=96
      3m=96                         
   3m÷3=96÷3
       m=32                                          

（3）8x-x=147
       7x=147
    7x÷7=147÷7
        x=21

（4）6y-4=44
   6y-4+4=44+4
       6y=48
    6y÷6=48÷6
        y=8
                        
（5）x-120=62
 x-120+120=62+120
         x=182                                

（6）x÷0.4=2.2
x÷0.4×0.4=2.2×0.4
          x=0.88