问题
解答题
2a+a=______
x-0.4x=______
1.5b+b=______
5d-2d=______.
答案
2a+a=3a;
x-0.4x=0.6x;
1.5b+b=2.5b;
5d-2d=3d.
故答案为:3a,0.6x,2.5b,3d.
2a+a=______
x-0.4x=______
1.5b+b=______
5d-2d=______.
2a+a=3a;
x-0.4x=0.6x;
1.5b+b=2.5b;
5d-2d=3d.
故答案为:3a,0.6x,2.5b,3d.