Question

0,4(x-9)-0,3(x+2)=0,7

Answer 1

0,4х-3,6-0,3х-0,6=0,7

0,1х=0,7+3,6+0,6

0,1х=4,9

х=4,9/0,1

х=49

 

 

 

 

 

 

 

 

Answer 2

0.4(x-9)-0.3(x+2)=0.7

0.4x-3.6-0.3(x+2)=0.7

(0.4x-0.3x)+(-3.6-0.6)=0.7

0.1x+(-3.6-0.6)=0.7

0.12x=0.7+4.2

0.1x=4.9

x=49