Question

2.2*(x-12)=4.62怎么解 1.26/（3+x）=1.75*0.2

Answer 1

2.2*(x-12)=4.62

x-12=4.62÷2.2

x-12=21

x=21+12

x=33

1.26/（3+x）=1.75*0.2

1.26/(3+x)+0.35

3+x=1.26÷0.35

3+x=3.6

x=3.6-3

x=0.6