A triangular prism is 18 inches long and has a triangular face with a base of 16 inches and a height of 15 inches. The other two
2 answers:
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Step-by-step explanation:
You're asking why
let's transpose the first equation for y
-2x-6y=18
-6y=18+2x
6y=-18-2x
y=-18/6-2x/6
y=-3-⅓x as required