Question

Упростите выражение:
1) 3a-2,7a;
2) 5,2b-3,6b;
3) 7x-1,4x+5,3x;
4) 12,75y-8,6y+1,2y;
5) 9,3n-2,36n+0,51n;
6) 10,25m-7,82m+0,92m.

Answer 1

1) 3a-2,7a=(3-2.7)*а=0.3а
2) 5,2b-3,6b=(5.2-3.6)*b=1.6b
3) 7x-1,4x+5,3x=(7-1.4+5.3)*x=10.9x
4) 12,75y-8,6y+1,2y=(12.75-8.6+1.2)*y=5.35y
5) 9,3n-2,36n+0,51n=(9.3-2.36+0.51)*n=7.45n
6) 10,25m-7,82m+0,92m=(10.25-7.82+0.92)*m=3.35m