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In other words in trinomial should be three different terms. Let we see some examples of trinomials. To add

the trinomials we can add the same terms coefficients and write down as coefficient for that variable.

Step 1: the given equation is

(2x + 3y + 4) + (4x – y + 6)

Step 2: we can write the equation as

(2x+ 3x)+ (3y – y) + (4 + 6)

Step 3: Now we can simplify this

5x + 2y + 10

Step 1: the given equation is

(-3x + 7y -10) + (2x +y – 7)

Step 2: we can write the equation as

(-3x+ 2x)+ (7y + y) + (-10 -7)

Step 3: Now we can simplify this

-x + 8y -17