Question

1) 0,3m+2(0,2m-0,3)=0,8-0,7(m-2) 2) 0,6-(1,3+1)=2,8x-13,52 3) 1\8(8\9y+8)-1\5(5\6y+1 2\3)=2

Answer 1

1)0.3m+2(0.2m-0.3)=0.8-0.7(m-2)
0.3m+0.4m-0.6=0.8-0.7m-1.4
0.7m-0.6=-0.6-0.7m
0.7m-0.7m=0.6-0.6
0=0

2)0.6-(1.3+1)=2.8x-13.52
0.6-2.3=2.8x-13.52
2.8x-13.52+1.7
2.8x=15.22
x=15.22/2.8
x=5.43571