kamila890
Answered

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Solve this simultaneous equation x+2y=11
x-2y=1

Sagot :

blackshades

Answer:

Equation 1,

[tex]x + 2y = 11[/tex]

Equation 2,

[tex]x - 2y = 11[/tex]

Take equation number 2.

[tex]x - 2y = 11 \\ x = 11 + 2y[/tex]

Substitute 'x' in Equation number 1.

[tex]x + 2y = 11 \\ 11 + 2y + 2y = 11 \\ 11 + 4y = 11 \\ 4y = 11 - 11 \\ 4y = 0 \\ y = \frac{0}{4} \\ y = 0[/tex]

y = 0.

So x,

[tex]x = 11 - 2y \\ x = 11 - 2(0) \\ x = 11 - 0 \\ x = 11[/tex]

x = 11.

MartinaNkechi

Answer:

using elimination method multiply both equations by 2...then subtract equation 2 from 1

View image MartinaNkechi
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