Question

x=5, y=2 is a solution of the linear equation (a) x+2y=7(b) 5x+2y equal 7 (c) x+y=7(d) 5x+y=7​

Answer 1

Answer:

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Step-by-step explanation:

$5x + 2y = 7 \\ 5 \times 5 + 2 \times 2 = 7 \\ 25 + 4 = 7 \\ 29 = 7 \\ = 7 - 29 \\ = - 22$

$x + y = 7 \\ 5 + 2 = 7 \\ 7 = 7 \\ = 7 - 7 \\ = 0$

$5x + y = 7 \\ 5 \times 5 + 2 = 7 \\ 25 + 2 = 7 \\ 27 = 7 \\ = 7 - 25 \\ = - 20$

$1.x + 2y = 7 \\ 5 + 2 \times 2 = 7 \\ 5 + 4 = 7 \\ 9 = 7 \\ = 7 - 9 \\ = - 2$