Question

resolva as equações:
X) -2(x-5) +3x = - (x + 2) -7

Y) ( x + 5) - 6 = -9 ( x-3) -2

Z) x-7 + 2 ( x-4) = -3 ( x+ 2 ) -8

Answer 1

X)-2(x-5)+3x=-(x+2)-7
-2x+10+3x=-x-2-7
x+10=-x-9
x+x=-9-10
2x=-19
x=-19/2

Y) (x+5)-6=-9(x-3)-2
x+5-6=-9x+27-2
x-1=-9x+25
x+9x=25+1
10x=26
x=26/10
x=2,6

Z) x-7+2(x-4)=-3(x+2)-8
x-7+2x-8=-3x-6-8
3x-15=-3x-14
3x+3x=-14+15
6x=1
x=1/6

Answer 2

x)
-2x + 10 + 3x = -x - 2 - 7
x + 10 = -x - 9
x + x = -9 - 10
2x = - 19
x = -19/2 = - 9.5***
y)
x + 5 - 6 = -9x + 27 - 2
x - 1 = -9x + 25
x + 9x = 25 + 1
10x = 26
x = 26/10 = 2.6 ***

z)

x - 7 + 2x - 8 = -3x - 6 - 8
3x - 15 = -3x - 14
3x + 3x = -14 + 15
6x = 1
x = 1/6 ****