bbyarxi
21.08.2019 •
Mathematics
If h= 2f over m+1, solve the equation for f
find the sum of 3b over b+2 and 12 over b+2
solve 3 over 6x + 1 over 2 = 8 over x + 4 over 3
all different questions !
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Ответ:
[multiply by (m+1)]
h(m+1) = 2f
[divide by 2]
f = (h (m + 1)) / 2
3b / (b+2) = 12 / (b+2)
[multiply by (b+2)]
3b = 12
[divide by 3]
b = 4
3 / (6x + 1) / 2 = 8 / (x + 4) / 3
[multiply both denominators to mike one denominator]
3 / 8(6x+1) = 8 / 3(x+4)
[expand brackets]
3 / (48x + 8) = 8 / (3x + 12)
[multiply by (48x + 8)]
3 = 8(48x + 8) / (3x+12)
[multiply by (3x+12)]
3(3x +12) = 4(48x + 8)
[simplify]
9x + 36 = 192x + 32
173x = 4
x = 4 / 173
Ответ:
(3*1)= 4-1
4-(2*1)=2
(4,1)
(x,y)