Question

помогите решить!
$x \div 2 \frac{1}{4} - 7x = 1 \frac{3}{8}$
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Answer 1

$\frac{1}{2}x*\frac{1}{4}-7x=\frac{11}{8}\\\frac{1}{8}x-7x=\frac{11}{8}\\x-56x=11\\-55x=11\\x=-\frac{1}{5}\\x=-0.2$