chezzdoddle
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Which ordered pair in the form (a, b) is a solution of this equation?

3a – 4b = 21



A.


(–3, –2)


B.


(–2, –3)


C.


(0, 7)


D.


(7, 0)

Respuesta :

XxMsBelieverxX21

Answer:

D. (7,0)

Step-by-step explanation:

Our original equation is 3a-4b=21.

The one we will try first is D. (7, 0)

Since we need to plug it in the form of (a,b) here is the equation now:

3(7)-4(0)=21

Now we solve:

3*7=21

4*0=0

Now we have 21-0=21

21-0 does equal 21.


AyeSmoky
Answer is D ( 7, 0 )

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