How do I find QS here?

Mathematics

1 answer:

juin [17]3 years ago

4 0

Answer: 12.
To solve this problem, let's first solve for x. Thi is easiest done by figuring what QR is in terms of x using two equations, both from different lines.
In the first line: QR = 15 - 4x.
In the third line:QR = 13x - 1 - x = 12x - 1.
Now, we have to set these equations equal to each other. 15 - 4x = 12x - 115 = 16x - 116x = 16x = 1
Next, we take line three, 13x - 1, and substitute x as 1. The answer is 12.

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ollegr [7]

Answer:

x = 2

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Step-by-step explanation:

x + y + z = 3 ---- i

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ii + iii

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i + ii

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iv + v

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