QUESTION IMAGE
Question
solve.
-2x + 7y = 10
x = 9
(□, □)
Step1: Sustituir \( x = 9 \) en la ecuación
Sustituimos \( x = 9 \) en \( -2x + 7y = 10 \):
\( -2(9) + 7y = 10 \)
\( -18 + 7y = 10 \)
Step2: Resolver para \( y \)
Sumar 18 a ambos lados:
\( 7y = 10 + 18 \)
\( 7y = 28 \)
Dividir por 7:
\( y = \frac{28}{7} = 4 \)
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\( (9, 4) \)