Question

4.(20-15)+3x=23 Resultado?

Answer 1

4(20-15)+3x=23
4(5)+3x=23
20+3x=23
3x=23-20
3x=3
x=3/3
x=1
_____________
Comprobando:

4(20-15)+3(1)=23
4(5)+3=23
20+3=23
23=23

:D