Question

como resolver as seguintes equações sendo U=Q
a)-2(m-5)+3m=-(m+2)-7
b)-(x+5)-6=-9(x-3)-2
c)x-7+2(x-4)=-3(x+2)-8

Answer 1

a)m+m=-9-10
2m=-19
m=-19/2


b) -x=9x=27-2+6+5
8x=38-2
x=36/8
x=9/2

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

Answer 2

a) -2(m-5)+3m=-(m+2)-7
-2m+10m+3m=-m-2-7
-2m+3m+m=-2-7-10
2m=19
m=19/2

b) -(x+5)=-9(x-3)-2
-x-5=-9x+27-2
-x+9x=27-2+5
8x=30
x=30/8

c) x-7+2(x-4)=-3(x+2)-8
x-7+2x-8=-3x-6-8
x+2x+3x=-6-8+8+7
6x=1
x=1/6