Question

resolve a expressao: a) x+2=5 b) 2x=20 c) 3x-5=10

resolva as inequaçoes: a) x+4<10 b) 2x-3<7

Answer 1

a) x+2=5
x=5-2
x=3

b) 2x=20
x=20/2
x=10

c) 3x-5=10
3x=10+5
3x=15
x=15/3
x=5