$$7 \times [ 4 + ( - 2 ) ] = - 8 \times 4 + 8 \times x$$
$x = \frac{23}{4} = 5\frac{3}{4} = 5.75$
$$7\times 2=-8\times 4+8x$$
$$14=-8\times 4+8x$$
$$14=-32+8x$$
$$-32+8x=14$$
$$8x=14+32$$
$$8x=46$$
$$x=\frac{46}{8}$$
$$x=\frac{23}{4}$$
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