{-3x+2. [45-x-3 (3x+7)-2x]+4x}=55-103-57:[-2. (2x-1)^2(-9)^0]=-106 Làm nhanh giúp mình nhé! 30/10/2021 Bởi Adeline {-3x+2. [45-x-3 (3x+7)-2x]+4x}=55-103-57:[-2. (2x-1)^2(-9)^0]=-106 Làm nhanh giúp mình nhé!
{-3x+2.[45-x3(3x+7)-2x]+x=55-103-57:[-2.(2x-1)².(-9)^0 =-106 -3x+2.45-x3.3x+7-2x+x=55-103-57:(-2).(2x-1).(2x-1).(-1)=-106 (-3x-3x-2x+x)+90.3x+7=55-103-57:(-2).2x-1.2x-1.(-1)=-106 -7x+270x+7 = 55-103-57:2x-1[(-2)-(-1)]=-106 263x+7= 55-103-57:2x-1.(-3)=-106 263x+7=-105:(-3).2x-1=-106 263x+7=35.2x-1=-106 263x+7=2x-1 =-3.028571428571429 263x+7=2x = -2.028571428571429 263x+7 =x = -1.014285714285714 263x+7 = -1.014285714285714 263x = -8.014285714285714 x =0.0304725692558392 vậy x = 0.0304725692558392 Bình luận
{-3x+2[ 45-x-3(3x+7)-2x]+4x}=55-103 ={-3x+2[45-x-9x-21-2x]+4x}=-48 =-3x+90-2x-18x-42-4x+4x=-48 =-3x-2x-18x-4x+4x=-48-90+42 =-23=-96 <=>x=96/23 -57:[-2(2x+1)^2-(-9)^0]=-106 =-2(2x+1)^2+1=57 =-2(2x+1)^2=56 Bình luận
{-3x+2.[45-x3(3x+7)-2x]+x=55-103-57:[-2.(2x-1)².(-9)^0 =-106
-3x+2.45-x3.3x+7-2x+x=55-103-57:(-2).(2x-1).(2x-1).(-1)=-106
(-3x-3x-2x+x)+90.3x+7=55-103-57:(-2).2x-1.2x-1.(-1)=-106
-7x+270x+7 = 55-103-57:2x-1[(-2)-(-1)]=-106
263x+7= 55-103-57:2x-1.(-3)=-106
263x+7=-105:(-3).2x-1=-106
263x+7=35.2x-1=-106
263x+7=2x-1 =-3.028571428571429
263x+7=2x = -2.028571428571429
263x+7 =x = -1.014285714285714
263x+7 = -1.014285714285714
263x = -8.014285714285714
x =0.0304725692558392
vậy x = 0.0304725692558392
{-3x+2[ 45-x-3(3x+7)-2x]+4x}=55-103
={-3x+2[45-x-9x-21-2x]+4x}=-48
=-3x+90-2x-18x-42-4x+4x=-48
=-3x-2x-18x-4x+4x=-48-90+42
=-23=-96 <=>x=96/23
-57:[-2(2x+1)^2-(-9)^0]=-106
=-2(2x+1)^2+1=57
=-2(2x+1)^2=56