Si x + z = 113, si x + 45 = 84, entonces z =?
Si x + z = 113, si x + 45 = 84, entonces z =.
Si x + z = 113, si x + 45 = 84, entonces z =.
En resumen
•x + z = 113 •x + 45 = 84 x = 84 - 45 x = 39 entonces x + z = 113 39 + z = 113 z = 113 - 39 z = 74.
•x + z = 113
•x + 45 = 84
x = 84 - 45
x = 39
entonces x + z = 113 39 + z = 113 z = 113 - 39 z = 74.