4(x+8)=644(x+8)=64

1
Divide both sides by 44.
x+8=644x+8=\frac{64}{4}

2
Simplify  644\frac{64}{4}  to  1616.
x+8=16x+8=16

3
Subtract 88 from both sides.
x=168x=16-8

4
Simplify  16816-8  to  88.
x=8x=8

Done

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