Which ordered pair is a solution to this equation? 3x + 7y = 13 (13, 2) (3, 1) (4, 1) (2, 1)

For this case we have the following equation:

What we should do is find an ordered pair of the form:

When replacing the ordered pair in the equation, equality must be met.

For the following ordered pair we have:

Substituting in the given equation we have:

We observe that both sides of the equation are equal.

An ordered pair that is a solution to the equation is:

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step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116