Question

Resolva as equações a) 5X-10=2X=20B) 3X+4=16 C) 5(X+2)+2X=3(X+2)

Answer 1

a) 5x-10=2x+20
5x-2x=20+10
3x = 30
X=30/3
X=10

B)3x+4=16
3x=16-4
3x=12
X=12/3
X=4

C)5(x+2)+2x=3(x+2)
5x+10+2x=3x+6
5x+2x-3x=6-10
4x=-4
X=-4/4
X=-1