Balls

Michal said to Martin: give me one ball, and I'll have twice as you. Martin said: give me 4, and we will have equally. How many balls does each have?

Correct answer:

x =  19
y =  11

Step-by-step explanation:

x=2 4+3+2 4=19

x+1 = 2(y-1)
(x-4) = y+ 4

x+1 = 2·(y-1)
(x-4) = y+ 4

x-2y = -3
x-y = 8

Row 2 - Row 1 → Row 2
x-2y = -3
y = 11


y = 11/1 = 11
x = -3+2y = -3+2 · 11 = 19

x = 19
y = 11

Our linear equations calculator calculates it.
y=2 4+3=11



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