Question

2x+1y=10,x-y=2 solve by elemination method​

Answer 1

Answer:

$\mathtt\purple{SOLUTION:-}$

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$\mathtt{2x + 1y = 10-----EQ(1)}$

$\mathtt{x - y = 2------EQ(2)}$

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$\mathtt\purple{NOW \: USE \: ELIMINATION \: METHOD}$

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$\mathtt\purple{ADD \: BOTH \: EQUATIONS}$

$\mathtt{2x + 1y = 10}$

$\mathtt{x \: \: \: - y \:= 2}$

$\mathtt{3x = 12}$

$\mathtt{x = \frac{12}{3} }$

$\fbox \purple{x = 4}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \:$

$\mathtt\purple{IN \: EQUATION \: 1}$

$\mathtt{2x + y = 10}$

$\mathtt{4 \times 2 + y = 10}$

$\mathtt{8 + y = 10}$

$\mathtt{ y = 10 - 8}$

$\fbox\purple{y=2}$