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• Identical expressions

• - two *sin(x + three / five) = zero
• minus 2 multiply by sinus of (x plus 3 divide by 5) equally 0
• minus two multiply by sinus of (x plus three divide by five) equally zero
• -2sin(x + 3/5) = 0
• -2sinx + 3/5 = 0
• -2*sin(x + 3 divide by 5) = 0

• Similar expressions

• -2*sin(x - 3/5) = 0
• 2*sin(x + 3/5) = 0