Question

Is (1, -2) a solution of 3x + 4y + 5
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Answer 1

Answer:

yes

Step-by-step explanation:

(1,-2)

so for verification, lets take x=1 and y=-2 as given

therefore, 3x +4y +5

so,

3(1) + 4(-2) +5

= 3-8+5

=-5+5

=0

so it is a solution

Answer 2

given x = 1 and y= -2

put value of x & y in 3x+4y+5

=>>>>> 3(1) +4(-2) +5

=>>>>> 3-8+5

=>>>>> 8-8

=>>>>> 0

therefore (1, -2) is the solution of 3x+4y+5