Х +2=7×9.Х-20=63÷9.Х +700 =890.Х×2=14+16.Х÷2=27-20. 890-х=700. 56-х=48÷6. 72÷х=45÷5. Х-700=190.
X+2=63 2x=30 x=63-2 x=15 x=61 x/2=7 x=14 x-20=7 890-x=700 x=27 x=890-700 x+700=890 x=190 x=190 56-x=48/6 56-x=8 x=56-8 x=48 72/x=9 9x=72 x=8 x-700=190 x=190+700 x=890
1. x+2=63 x=61 2. x-20=7 x=27 3. x=190 4. x=30/2 x=15 5. x=7*2 x=14 6. x= 190 7. x=56-8 x=48 8. x=72/9 x=8 9. x=890