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Alenkasestr [34]
3 years ago
8

Y = 3 - x 3x + 4y = 1 What is the value of x?

English
1 answer:
Cloud [144]3 years ago
8 0

Answer:

\boxed{x = 11}

Explanation:

y = 3 - x  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  -  equation _{1}\\  3x + 4y = 1 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  -  equation _{2} \\  \\ Putting \:  value  \: of \:  y \:  in \:  equation_{1}  \: to  \: equation_{2} \\  \\  =  > 3x + 4(3 - x) = 1 \\  \\  =  > 3x + (4 \times 3) - (4 \times x) = 1 \\  \\  =  > 3x + 12 - 4x = 1 \\  \\  =  >  - x + 12 = 1 \\  \\  =  >  - x = 1 - 12 \\  \\  =  >   \cancel{- }x = \cancel{  - }11 \\  \\  =  > x = 11

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