Question

9. Calcular "x" en: 4(x + 1) - 20 = 28 el valor de x
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Answer 1

4(x + 1) - 20 = 28

4x + 4 - 20 = 28

4x -16 = 28

4x = 44

x = 44/4

x=11

Answer 2

Respuesta:

$x=11$

Explicación paso a paso:

$4\left(x+1\right)-20=28\\\\4\left(x+1\right)-20+20=28+20\\\\4\left(x+1\right)=48\\\\\frac{4\left(x+1\right)}{4}=\frac{48}{4}\\\\x+1=12\\\\x+1-1=12-1\\\\x=11$