3 years ago

Write an expression that is equivalent to (4x + 9)

Mathematics

2 answers:

notka56 [123]3 years ago

6 0

The final answer would be 4x+9.

zalisa [80]3 years ago

4 0

As this is already in its simplest form, I believe the only other expression is 4*X +9

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Tnemos el sisema de ecuaciones:

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Podemos resolverlo por eliminación sumando ambas ecuaciones y eliminando y. Asi podemos resolver para x:

$\begin{gathered} (5x+2y)+(2x-2y)=(-15)+(-6) \\ 7x+0y=-21 \\ x=-\frac{21}{7} \\ x=-3 \end{gathered}$

Ahora podemos resolver para y con cualquiera de las dos ecuaciones:

$\begin{gathered} 2x-2y=-6 \\ 2\cdot(-3)-2y=-6 \\ -6-2y=-6 \\ -2y=-6+6 \\ -2y=0 \\ y=0 \end{gathered}$

Respuesta: x=-3, y=0

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1 year ago