A)5×=-10
b)3 (2×-1)=3×+2
c)5 (3×-2)=4
d)×+11=-20
e)2×+3=-×-6
f)×-4=-2×-2
g)3 (×-2)=2 (×+4)=
h)6×+3=18
Com conta por favor
b)3 (2×-1)=3×+2
c)5 (3×-2)=4
d)×+11=-20
e)2×+3=-×-6
f)×-4=-2×-2
g)3 (×-2)=2 (×+4)=
h)6×+3=18
Com conta por favor
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a) 5x = - 10
x= - 10/5
x= - 2
b) 3(2x-1)=3x+2
6x-3=3x+2
6x-3x=2+3
3x=5
x=5/3
c) 5(3x-2)=4
15x -10=4
15x=4 +14
15x= 18
x=18/15 ÷ 3
x=6/5
d) x+11=-20
x=-20-11
x= - 31
e) 2x+3=-x-6
2x+x=-6-3
3x= -9
x= -9/3 ÷ 3
x= - 3
f) x-4=-2x-2
x+2x=-2+4
3x=2
x=2/3
g) 3(x-2)=2(x+4)
3x-6=2x+8
3x-2x=8+6
x=14
h) 6x+3=18
6x=18-3
6x=15
x=15/6 ÷ 3
x=5/2
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