# The Math Challenge: Question Preview (ID: 9399)

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What is the sum of x-3 and 2x+7? |
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a) 2x+4 | b) 3x+10 | c) 3x+4 | d) 2x+10 | |

(8u+3) - (4u-2)= |
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a) 12u+5 | b) 4u+1 | c) 4u+5 | d) 12u+1 | |

-(2x-4+5x)= |
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a) -7x+4 | b) 3x-4 | c) 3x+4 | d) -7x-4 | |

(a+3b+5)+(3a-b-5)= |
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a) 4a+4b | b) 4a+2b | c) 4a+4b+10 | d) 4a+2b+10 | |

(x-y)-(y-x) |
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a) 0 | b) -2y | c) 2x+2y | d) 2x-2y | |

What is the sum of r-10 and 100-3r? |
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a) 90-2r | b) 90+2r | c) 110-2r | d) 110+2r | |

6 + 2(x + y - 2) = |
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a) 2x + y + 2 | b) 2x + y + 4 | c) 2x + 2y + 2 | d) 2x + 2y + 4 | |

(12a + 9 - 5b) + (17b - 6 - 2a) = |
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a) 29a + 3 - 7b | b) 10a + 12b + 3 | c) 10a - 22b + 3 | d) 14a + 12b + 15 | |

Find the sum of (4x + 9) and (x - 12) |
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a) 5x + 3 | b) 5x + 9 + 3 | c) 5x - 9 + 3 | d) 5x - 3 | |

Simplify the expression -10 (x - 3y + 11) |
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a) 10x - 30y - 110 | b) -10x + 30y - 110 | c) 10x + 30y - 110 | d) -10x - 30y + 110 | |

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