x÷4=11解方程.5x-17=73解方程.6.1-x=4.5解方程.4x+16=100解方程.(x+2)÷5=6.2解
1个回答

x÷4=11

X=11x4

X=44

5x一17=73

5X=73+17

X=90÷5

X=18

6.1一x=4·5

x=6.1-4.5

x=1.6

4X+16=100

4x=100一16

x=84÷4

X=21

(x+2)÷5=6.2

x+2=6.2x5

x=31-2

X=29

4x+7x=12.1

11X=12.1

X=12.1÷11

x=1.1

5X一2.1x4=11.6

5x一8.4=11.6

5X=11.6+8.4

x=20÷5

x=4

8x一3x=3.5

5X=3.5

X=3.5÷5

X=0.7