4 years ago

Find the value of the expression 12x+3 1 2 x + 3 if x = 12.

Mathematics

1 answer:

Ganezh [65]4 years ago

5 0

Answer:

The answer is 147

Step-by-step explanation:

12x+3 x=12

12(12)+3

144+3

147

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Tnemos el sisema de ecuaciones:

$\begin{gathered} 5x+2y=-15 \\ 2x-2y=-6 \end{gathered}$

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

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

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