Question

9x - 10y = - 3
9x - 26y = -67 método de igualación​

Answer 1

Respuesta:

y= 4

x= 4.11

Explicación paso a paso:

9x - 10y = -3

9x = -3 + 10y

x = -3 + 10 y / 9

9x - 26y = -67

9x = -67 + 26y

x = -67 + 26y / 9

-3 + 10y/9 = -67 + 26y / 9

9 (-3 + 10y) = 9 (-67 + 26y)

-27 + 90y = -603 + 234y

-27 + 603 = 234y - 90y

575 = 144y

575 / 144 = y

y = 4

9x - 26y = -67

9x - 26 (4) = -67

9x - 104 = -67

9x = -67 + 104

9x = 37

x = 37 / 9

x = 4.11

Comprobación.

9x - 10y = -3

9 (4.11) - 10 (4) = -3

37 - 40 = -3

-3 = -3