Cristina puede mecanografiar un ensayo de 50 páginas en 8h. Si el mes pasado Cristina y Ángela juntas mecanografiaron un ensayo
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Answer:
Step-by-step explanation:
Put the values:
While subtracting , sign of each term of the second expression changes.
Add the numbers : 9 and 9
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This would be one way to write the expresion/equation; in which "x" represents the unknown number.
Now, to solve for "x" ;
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Given:
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Add "5" to EACH SIDE of the equation:
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to get:
x = (-2 * 3) ;
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x = - 6 .
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