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4 units = blue
1 unit = yellow
total: 5 units = 40
1 unit = 40 ÷ 5 = 8
yellow: 8
blue: 8×4 = 32
Equation 1 : x + y + z = 3.25
equation 2 : 12x + 2y + z = 9.50
equation 3 : 2x + 4y + 5z = ??
u would multiply equation 1 by -12.....take that result and add it to equation 2....this eliminates x.
u would multiply equation 3 by -6...take that result and add it to equation 2....this eliminates x
Answer:
b
Step-by-step explanation:
