3.4(x-1)-1.2(2x-2)=7(0.5)+2(2
Datrys ar gyfer x
x=8.5
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3.4x-3.4-1.2\left(2x-2\right)=7\times 0.5+2\times 2
Defnyddio’r briodwedd ddosbarthu i luosi 3.4 â x-1.
3.4x-3.4-2.4x+2.4=7\times 0.5+2\times 2
Defnyddio’r briodwedd ddosbarthu i luosi -1.2 â 2x-2.
x-3.4+2.4=7\times 0.5+2\times 2
Cyfuno 3.4x a -2.4x i gael x.
x-1=7\times 0.5+2\times 2
Adio -3.4 a 2.4 i gael -1.
x-1=3.5+2\times 2
Lluosi 7 a 0.5 i gael 3.5.
x-1=3.5+4
Lluosi 2 a 2 i gael 4.
x-1=7.5
Adio 3.5 a 4 i gael 7.5.
x=7.5+1
Ychwanegu 1 at y ddwy ochr.
x=8.5
Adio 7.5 a 1 i gael 8.5.
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