Question

resolva as equações

-5b+7-10=-3b+13-12

0=-x+3-2x+5

-5x+3-2x+1=0

-4x-1-3x=-2x+7x-1

-2-x+5=-2x+3x-10x​

Answer 1

-5b+7-10=-3b+13-12
-5b+3b=13-12-7+10
-2b=4
b=-2

0=-x+3-2x+5
x+2x=3+5
2x=8
x=4

-5x+3-2x+1=0
-7x=-1-3
-7x=-4

-4x-1-3x=-2x+7x-1
-4x-3x+2x-7x=-1+1
12x=0

-2-x+5=-2x+3x-10x
+2x-3x+10x+x=+2-5
10x=-3