Homework - jumps

Sasha jumped 121 cm Peter 4 cm more than Jirka.
Jirka 6 cm less than Misha. Misha 7 cm less than Filip and Filip half as much Sasha and Petr together. How far each jumped?

Result

Saša:  121 cm
Petr:  103 cm
Jirka:  99 cm
Míša:  105 cm
Filip:  112 cm

Solution:

Solution in text Petr:=
Solution in text Jirka:=
Solution in text Míša:=
Solution in text Filip:=

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To solve this verbal math problem are needed these knowledge from mathematics:

Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation? Do you want to convert length units?

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