Question

ejercicios de ecuaciones simples , muchas gracias

Answer 1

x+3x=12
4x=12
x=12/4
x=3
_____________
x/4+1=9
x+4=36
x=36-4
x=32
____________
12+3x=27
3(4+x)=27
4+x=27/3
4+x=9
x=9-4
x=5
______________
√x+5=8
x+25=64
x=64-25
x=39