5n + 10 = 10n - 65

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15

Step-by-step explanation: 5n + 10=10n - 65

                                           -10n        -10n

                                            -5n +10 = -65

                                                   -10    -10

                                              -5n = -75

                    divide -5 on both sides and you should get positive 15

£56

step-by-step explanation:

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.