a). |
b). X + X = 18 __________ X = _______ |
c). X + 2X = 9 __________ X = _______ |

d). X + X + X = 18 __________ X = _______ |
e). 3X - 2X = 15 __________ X = _______ |
f). 5X + 2X + 2X = 81 __________ X = _______ |

g). X + 5 - 3 = 10 __________ X = _______ |
h). 2X ^{2} - X^{2} = 81__________ X = _______ |
i). 3X + X + 2X + 5 = 41 __________ X = _______ |

a). The perimeter is 36 inches. | Equation: 2X+X+2X+X=36 X = _______ |
b). The perimeter is 64 feet. | Equation: ________________ X = _______ |

c). The perimeter is 100 inches | Equation: ________________ X = _______ |
d). The perimeter is 144 feet | Equation: ________________ X = _______ |