a, \(x+17=14\)
\(x=-3\)
b, \(2x-6-3x+15=-18\)
\(-x+9=-18\)
\(-x=-27\)
\(x=27\)
x-(-17)=14
<=>x+17=14
<=>x=-3
Vậy x=-3
2(x-3)-3(x-5)=-18
<=>2x-6-3x+15=-18
<=>9-x=-18
<=>x=-27
Vậy x=-27
\(x-\left(-17\right)=14\)
\(\Leftrightarrow x=14+\left(-17\right)\)
\(\Leftrightarrow x=-3\)
Vậy \(x=-3\)
\(2\left(x-3\right)-3\left(x-5\right)=-18\)
\(\Leftrightarrow2x-6-3x+15=-18\)
\(\Leftrightarrow-x+9=-18\)
\(\Leftrightarrow-x=-18-9\)
\(\Leftrightarrow-x=-27\)
\(\Leftrightarrow x=27\)
Vậy \(x=27\)
x-(-17)=14
x+17=14
x=14-17
x=-3
\(X-\left(-17\right)=14\)
\(\Leftrightarrow X+17=14\)
\(\Leftrightarrow X=14-17=-3\)
Vậy \(X=-3\)
\(2\left(X-3\right)-3\left(x-5\right)=-18\)
\(\Leftrightarrow2X-6-3X+15=-18\)
\(\Leftrightarrow-X=-18+6-15=-27\)
\(\Leftrightarrow X=27\)
Vậy \(X=27\)
x - ( -17 ) = 14
x = 14 + ( -17 )
x = -3
A)x-(-17)=14=x+17=14=>x=-3
B)2(x-3)-3(x-5)=-18=2x-6-3x+15=>-x=-18+6-15=.x=-27
x-(-17)=14 2.(x-3)-3.(x-5)=-18
x+17=14 (theo quy tắc đổi dấu) =>2.x-6-3.x-15=18
x=14-17 =>9-x=18
x=-3 vậy x=-27
chúc bạn học tốt!
2 ( x -3 ) - 3 ( x - 5 ) = -18
<=> 2x - 6 - 3x + 15 = -18
<=> -x = -18 + 6 - 15 = -27
<=> x = 27
Vậy x = 27
2(x-3)-3(x-5)=2x-2*3-3x-3*5=2x-6-3x-15=2x-3x-6-15=-x+9=-18
=>-x=-18-9=-27
=>x=27
a) x-(-17)=14
<=> x+17=14
<=> x=-3
b) 2(x-3)-3(x-5)=-18
<=> 2x-6-3x+15=-18
<=> -x+9=-18
<=> -x=-27
<=> x=27
a, x - (-17) = 14
x + 17 = 14
x = -17+14
x = -3
b, 2(x - 3) - 3(x - 5) = -18
2x-6-3x+15=-18
2x-3x = 6-15-18
2x-3x = -27
-1x = -27
x = -27:-1
x = 27
\(a,x-\left(-17\right)=14\)
\(=>x+17=14\)
\(=>x=14-17\)
\(=>x=-3\)
b,\(2.\left(x-3\right)-3.\left(x-5\right)=-18\)
\(=2x-6-3x+15=-18\)
\(=>-x=-18-15+6=-27\)
\(=>x=27\)