Question

Sa se rezolve in Z
4(5-x)=24
4(5-x)=-24
5-8x=-27
2(x-3)-8=-18
2(1-x)=-10
-8-9x=19
-8=4+3(x+2)
4+10x=-16
3x-4·[-5+(-2) la puterea 2]=1
Dau coroană

Answer 1

a)4 (5-x)=24 =
=20-4x=24/+20=
=4x=44/:4=
=x=11
b)-11(este la fel ca celalalt, doar ca Îți va da nr. negativ )
c)5-8x=-27/+5=
=8x=32/:8=
=x=4
d)2 (x-3)-8=-18=
=2x-6-8=-18/+8=
=2x-6=-10/+6=
=2x=-4/:2=
=x=-2
e)2 (1-x)=-10=
=2-2x=-10/+2=
=2x=-8/:2=
=x=-4
f)-8-9x=19/+(-8)=
=9x=27/:9=
=x=3
g)4+3 (x+2)=-8/-4=
=3x+6=-12/-6=
=3x=-18/:3=
=x=-6
h)4+10x=-16/-4=
=10x=-20/:10=
=x=-10
i)3x-4×[-5+(-2)^2]=1=
=3x-4×(-5+4)=1=
=3x-4×-1=1=
=3x+4=1=
=3x=4-1=3/:3=
=x=1