5( x - 1 ) - 6( 3 - x ) > 0
0,6x - 1 < 3,2
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5x - 5 - 18 + 6x > 0
11x > 23
x > 2 1/11
0,6x < 1,32
x < 2,2
ОТВЕТ ( 2 1/11 ; 2,2 )
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( x / 4 ) + ( x / 3 ) < 1
3 - 2x > 0
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3x + 4x < 12
x < 1 5/7
2x < 3
x < 1,5
1 5\7 = 1 10\14
1,5 = 1 1/2 = 1 7/14
Ответ ( - ∞ ; 1,5 )
Лови 4x + 3a) - (5x - 3a) = 4x + 3a - 5x +3a = 6a - x
1-sin²x+cosx=cosx
cos²x=0
(1+cos2x)/2=0
1+cos2x=0
cos2x=-1
2x=π+2πn
x=π/2+πn,n∈z