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Find a number that is 15 more than 4 times its opposite

Find a number that is 15 more than 4 times its opposite
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Find a number that is 15 more than 4 times its opposite

User Rohit Lingayat
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x - the number


x=4\cdot(-x)+15\\ x=-4x+15\\ x+4x=15\\ 5x=15\\ x=3
User Steffen Frank
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