Question

Me ajudem a resolve
A)2x-10=10x+70
B)10x+30=3x-15
C)4x-10=2x+2

Answer 1

A)
2x - 10 = 10x + 70
2x = 10x + 70 + 10
2x - 10x = 80
-8x = 80
x = 80/8
x = 10
B)
10x + 30 = 3x - 15
10x = 3x - 15 - 30
10x - 3x = -45
7x = -45
x = -45/7
x = -6,42
C)
4x - 10 = 2x + 2
4x = 2x + 2 + 10
4x - 2x = 12
2x = 12
x = 12/2
x = 6

Answer 2

A) 2x-10x= 70 +10 -8x= 80 x= -10 b) 10x -3x=-15-30 x='45/7 c) 4x -2x = 2+ 10 2x = 12 x= 6