Question

LSPIC35 U.U
a
Find the value of k, if x = 2. y= 1 is a solution of the equation 2x + 3y = k.
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Answer 1

2(2)+3(1)=K

4+3=K

7=K

The value of K=7

finding value of K

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Answer 2

$x = 2 \\ y = 1 \\ so \: \: 2x + 3y = k \\or \: \: \: \: 2 \times 2 + 3 \times 1 = k \\or \: \: \: \: 4 + 3 = k \\ or \: \: \: \: \: 7 = k \\ hence.k = 7$