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koban [17]
3 years ago
15

Solve this System of equation 3c+6d=18 6c-2d=22

Mathematics
1 answer:
olga55 [171]3 years ago
7 0

Answer:

3x + 6y = 18  \:  \:  \: \\  +  \\ 3 \times (6x - 2y = 22) \:  \:  \: 18x - 6y = 66 \\  \\ 21x = 84 \\ x =  \frac{84}{21}  = 4

c=x=4

d=(18-3×4)÷6=6÷6=1=y

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