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multiplica em cruz
x + 1 = 2x + 6
____ ______ multiplica
5 15
15x + 15 = 10x + 30
x = 3
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
3y - 10 = 10
______ ___
5Y + 2 5
15y - 50 = 50y + 20
y = -2
multiplica em cruz
x + 1 = 2x + 6
____ ______ multiplica
5 15
15x + 15 = 10x + 30
x = 3
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
3y - 10 = 10
______ ___
5Y + 2 5
15y - 50 = 50y + 20
y = -2
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