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gtgrc5834
@gtgrc5834
August 2022
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Monster112
А) x=21/3
x=7
б) x=3/10 : (-2/5)
x=3/10*(-5/2)
x=3/2*(-1/2)
x=-3/4
x=-0,75
в) 0,5x+0,15=0
0,5x=-0,15
x=-0,15/0,5
x=-0,3
г) 0,3p-5=6-0,7p
0,3p-5-6+0,7p=0
0,3p+0,7p=6+5
p=11
д) (6-2x)+4=-5x-3
6-2x+4+5x=-3
-2x+5x=-3-6-4
3x=-13
x=-13/3
е) (2x+3)-(5x+11)=7+(13-2x)
2x+3-5x-11=7+13-2x
2x+3-5x-11+7-13+2x=0
2x-5x+2x=-3+11-7+13
x=14
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Answers & Comments
x=7
б) x=3/10 : (-2/5)
x=3/10*(-5/2)
x=3/2*(-1/2)
x=-3/4
x=-0,75
в) 0,5x+0,15=0
0,5x=-0,15
x=-0,15/0,5
x=-0,3
г) 0,3p-5=6-0,7p
0,3p-5-6+0,7p=0
0,3p+0,7p=6+5
p=11
д) (6-2x)+4=-5x-3
6-2x+4+5x=-3
-2x+5x=-3-6-4
3x=-13
x=-13/3
е) (2x+3)-(5x+11)=7+(13-2x)
2x+3-5x-11=7+13-2x
2x+3-5x-11+7-13+2x=0
2x-5x+2x=-3+11-7+13
x=14