Question

Resolver equação de 1 grau 21x-(-3x+10)=4x+2

Answer 1

21x -  ( - 3x + 10 ) =  4x + 2

21x + 3x - 10 = 4x + 2

21x + 3x  - 4x = 2 + 10

24x - 4x = 12

20x = 12

x = 12 / 20 : 4

x = 3 / 5
 S = { 3 / 5 }

Answer 2

21x-(-3x+10)=4x+2
 21x-4x=2+3x-10
17x=2+3x-10
17x-3x=2-10
14x=-8
x=-8/14