VF
{ Informatikus }
megoldása
2 éve
1)
`x * 6 = x + 75`
`x * 6 - x = 75`
`x * 5 = 75`
`x = 75 // 5 = color(red)15`
Ellenőrzés:
`{:(x * 6 = 15 * 6 = 90),
(x + 75 = 15 + 75 = 90):} } ✓`
2)
`{(x + y = 263),
(x // y = 3", maradék" \ 51):}`
`x // y = 3, "maradék" \ 51`
`x = 3 * y + 51`
`x + y = 263`
`(3 * y + 51) + y = 263`
`4 * y + 51 = 263`
`4 * y = 263 - 51`
`4 * y = 212`
`y = 212 // 4 = color(red)53`
`x + y = 263`
`x = 263 - y = 263 - 53 = color(red)210`
Ellenőrzés:
`x + y = 210 + 53 = 263`
`x // y = 210 // 53 = 3, "maradék" \ 51`
3)
`{(ty + ny = 40),
(ty * 2 + ny * 4 = 100):}`
`ty + ny = 40`
`ty = 40 - ny`
`2 * ty + 4 * ny = 100`
`2 * (40 - ny) + 4 * ny = 100`
`2 * 40 - 2 * ny + 4 * ny = 100`
`80 + 2 * ny = 100`
`2 * ny = 100 - 80`
`2 * ny = 20`
`ny = 20 // 2 = color(red)10`
`ty = 40 - ny = 40 - 10 = color(red)30`
Ellenőrzés:
`ty + ny = 30 + 10 = 40`
`ty * 2 + ny * 4 = 30 * 2 + 10 * 40 = 60 + 40 = 100`
4)
`47 - x = 5 * (23 - x)`
`47 - x = 5 * 23 - 5 * x`
`47 - x = 115 - 5 * x`
`- x + 5 * x = 115 - 47`
`4 * x = 68`
`x = 68 // 4 = color(red)17`
Ellenőrzés:
`{:(47 - x = 47 - 17 = 30),
(5 * (23 - x) = 5 * (23 - 17) = 5 * 6 = 30):} } ✓`
5)
`{(color(white)(1 *) x, + y, = 236, +),
(color(white)(1 *) x, - y, = 72, ):}`
`" "bar{( 2 * x, color(white)(+ 0), = 308, ):}`
`2 * x = 308`
`x = 308 // 2 = color(red)154`
`x + y = 236`
`y = 236 - x = 236 - 154 = color(red)82`
Ellenőrzés:
`x + y = 154 + 82 = 236`
`x - y = 154 - 82 = 72`
6)
`{(x + y = 567),
(x = 2 * y):}`
`x + y = 567`
`y = 567 - x`
`x = 2 * y`
`x = 2 * (567 - x)`
`x = 2 * 567 - 2 * x`
`x + 2 * x = 1134`
`3 * x = 1134`
`x = 1134 // 3 = color(red)378`
`y = 567 - x = 567 - 378 = color(red)189`
Ellenőrzés:
`x + y = 378 + 189 = 567`
`2 * y = 2 * 189 = 378`
7)
`x = (90 - x) // 8`
`8 * x = 90 - x`
`8 * x + x = 90 `
`9 * x = 90`
`x = 90 // 9 = color(red)10`
Ellenőrzés:
`(90 - x) // 8 = (90 - 10) // 8 = 80 // 8 = 10`
8)
`x = (180 - x) - 30`
`x + x = 180 - 30`
`2 * x = 150`
`x = 150 // 2 = color(red)75`
Ellenőrzés:
`(180 - x) - 30 = (180 - 75) - 30 = 105 - 30 = 75`
9)
`x + (x + 1) + (x + 2) + (x + 3) = 1414`
`4 * x + 6 = 1414`
`4 * x = 1414 - 6`
`4 * x = 1408`
`x = 1408 // 4 = color(red)352`
`x + 1 = 352 + 1 = color(red)353`
`x + 2 = 352 + 2 = color(red)354`
`x + 3 = 352 + 3 = color(red)355`
Ellenőrzés:
`x + (x + 1) + (x + 2) + (x + 3) = 352 + (352 + 1) + (352 + 2) + (352 + 3) = 352 + 353 + 354 + 355 = 1414`
Módosítva: 2 éve
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