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<math> <mi mathcolor="blue">x</mi> <mo>+</mo> <mn mathcolor="#00ff33" color="purple">7 </mn> <mo>+</mo> <mn color="yellow">3</mn> <mo>+</mo> <mstyle color="red"> <mi>z</mi> <mo>+</mo> <mi mathcolor="blue">q</mi> <mo>+</mo> <mi>q</mi> </mstyle> </math>