Step by step
The question
Question: is (1, 4) a solution of 2x + y = 5.
2x + y = 5
is (1, 4) a solution?
1 Read x and y
The first number is always x.
The second is y.
So x = 1 and y = 4.
(1, 4) → x = 1, y = 4
Careful!
Do not swap them.
The first number in (1, 4) is x.
Careful: not x = 4, y = 1 ✗
2 Put them in
Put x = 1 and y = 4 in.
2(1) + 4 =? 5
Work out each side.
2 + 4 =? 5
Is 6 equal to 5?
No.
That is false.
6 ≠ 5 false ✗
It is false.
So (1, 4) is not a solution.
(1, 4) is not a solution
Let's look back.
First: read x and y.
Last: put them in.
Answer
(1, 4) is not a solution