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ShiroishiChan
@ShiroishiChan
August 2022
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Решите уравнения:
1) 3у * ( 4у - 1 ) - 2у * ( 6у - 5 ) = 9у - 8 * ( 3 + у )
2) 15х + 6х * ( 2 - 3х ) = 9х * ( 5 - 2х ) - 36
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Answers & Comments
Flash3146
3y*(4y-1)-2y(6y-5)=9y-8(3+y)
12y-3y-12y+10y=9y-24-8y
7y-y=-24
6y=-24:6
y=-4
15x+6x(2-3x)=9x(5-2x)-36
15x+12x-18x=45x-18x-36
15x+12x-18x-45x-18x=-36
-18x=-36:(-18)
x=2
3*(-4)(4*(-4)-1)-2*(-4)(6*)-4)-5)=-12*(-16-1)+8(-24-5)=-12*(-17)+8*(-29)=204-232=-28
9*(-4)-8(3-4)=-36-24+32=
3 votes
Thanks 1
ritafire
1) 12 y^2 - 3y - 12 y^2+10y=9y-24-8y
-3y+10y-9y+8y=-24
6y=-24
y=-4
2) 15x +12x-18x^2=45-18x^2-36
-18x^2+27x=45-18x^2-36
27x=45-36
27x=9
x=1/3
1 votes
Thanks 1
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Answers & Comments
12y-3y-12y+10y=9y-24-8y
7y-y=-24
6y=-24:6
y=-4
15x+6x(2-3x)=9x(5-2x)-36
15x+12x-18x=45x-18x-36
15x+12x-18x-45x-18x=-36
-18x=-36:(-18)
x=2
3*(-4)(4*(-4)-1)-2*(-4)(6*)-4)-5)=-12*(-16-1)+8(-24-5)=-12*(-17)+8*(-29)=204-232=-28
9*(-4)-8(3-4)=-36-24+32=
-3y+10y-9y+8y=-24
6y=-24
y=-4
2) 15x +12x-18x^2=45-18x^2-36
-18x^2+27x=45-18x^2-36
27x=45-36
27x=9
x=1/3