Datrys ar gyfer x
x=1
Graff
Rhannu
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3x\left(2-4\right)+2x-5\left(x+1\right)=\frac{-28}{2}
Rhannu’r ddwy ochr â 2.
3x\left(2-4\right)+2x-5\left(x+1\right)=-14
Rhannu -28 â 2 i gael -14.
3x\left(-2\right)+2x-5\left(x+1\right)=-14
Tynnu 4 o 2 i gael -2.
-6x+2x-5\left(x+1\right)=-14
Lluosi 3 a -2 i gael -6.
-4x-5\left(x+1\right)=-14
Cyfuno -6x a 2x i gael -4x.
-4x-5x-5=-14
Defnyddio’r briodwedd ddosbarthu i luosi -5 â x+1.
-9x-5=-14
Cyfuno -4x a -5x i gael -9x.
-9x=-14+5
Ychwanegu 5 at y ddwy ochr.
-9x=-9
Adio -14 a 5 i gael -9.
x=\frac{-9}{-9}
Rhannu’r ddwy ochr â -9.
x=1
Rhannu -9 â -9 i gael 1.
Enghreifftiau
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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