Step-by-step explanation:
[tex]4(7x - 4) + 4 = 100 \\ 28x - 16 + 4 = 100 \\ 28x - 12 = 100 \\ 28x = 100 + 12 \\ 28x = 112 \\ x = \frac{112}{28} \\ x = 4[/tex]
