Question

解方程：4（x+0.3）=4.8 3*0.7+4x=6.5 5.5x-1.3x=12.6

Answer 1

4（x+0.3）=4.8

x+0.3=1.2

x=1.2-0.3

x=0.9

3*0.7+4x=6.5

2.1+4x=6.5

4x=6.5-2.1

4x=4.4

x=1.1

5.5x-1.3x=12.6

4.2x=12.6

x=3