Question

怎么解小学5年级这些方程?13.2x+9x=33.3 5.4x+X=12.8 x-0.36x=16 4X2.5-4x=2

Answer 1

13.2x+9x=33.3 22.2x=33.3 x=1.5

5.4x+x=12.8 6.4x=12.8 x=2

x-0.36x=16 解 ：0.64x=16 x=25

4X2.5-4x=2 10-4x=2 -4x=-8 x=2

2.1x+1.5X1.6=10.8 2.1x+2.4=10.8 2.1x=8.4 x=4