Cățelușa Heidi are trei tipuri de meniuri pe care le poate consuma într-o zi. Primul este compus din 9 oase, al doilea din 4 oas
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Answer:
Step-by-step explanation:
We have been given the equation:
And
Second equation can be rewritten as:
We will solve the equations:
(1)
(2)
Multiply equation (1) by 5 and equation (2) by 3 we get:
(3)
(4)
Now, subtract (4) from (3) we get:
Now substitute in equation (1) we get: