Answered

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Solve the equations x + y = 300 and 12x + 15y
4,140

Sagot :

belleza49

Answer:

x=120

y=180

Step-by-step explanation:

x=300-y

12x+15y=4140

12(300-y)+15=4140

y=180

substitute

x=300-180

x=120

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