Question

A) 5.(X-2)= -15 como resuelvo esta ecuaciones B) -7x-9=6-2x-10 C) -4x+3-7x=9-8x D) x-10=5.(x+2)

Answer 1

Bueno si no me equivoco esto es así .
A-5x-10=-15
5X=-15+10
X=5÷5
X=1

Answer 2

5.(X-2)= -15
5x -10 = -15
5x = -15 + 10
5x = -5
x = -1


 -7x-9=6-2x-10
-7x-9 = -4 -2x
-9+4 = 7x-2x
-5 = 5x
-1 = x

-4x+3-7x=9-8x
-10x +3 = 9 - 8x
3-9 = 10x -8x
-6 = 2x
-3 = x
 
x-10=5.(x+2)
x - 10 = 5x +10
-10-10 = 5x -x
-20 = 4x
-5 = x