Question

encontre x nas equaçoes
a) 2x-1=-x+2
b)3+5x=-7
c)x=20
4

Answer 1

2x-1=-x+2 2x+x=2+1
3x= 3
x= 3/3
X=1
5x= -7-3
5x= -10
X= -10/5
X= -2