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Question
directions: if (lparallel m), solve for (x). 5. ((9x + 2)^{circ}), (119^{circ}), (m) 6. ((12x - 8)^{circ}), (104^{circ}), (m) 7. ((5x + 7)^{circ}), ((8x - 71)^{circ}), (l), (m) 8. ((4x - 7)^{circ}), ((7x - 61)^{circ}), (l), (m) directions: if (lparallel m), solve for (x) and (y). 9. ((9x + 25)^{circ}), ((13x - 19)^{circ}), ((17y + 5)^{circ}), (l), (m) 10. ((3x - 29)^{circ}), ((8y + 17)^{circ}), ((6x - 7)^{circ}), (l), (m) 11. (49^{circ}), ((3x)^{circ}), ((7x - 23)^{circ}), ((11y - 1)^{circ}), (l), (m) 12. ((7y - 20)^{circ}), ((5x - 38)^{circ}), ((3x - 4)^{circ}), (l), (m)
5.
Step1: Identificar ángulos correspondientes
Los ángulos $(9x + 2)^{\circ}$ y $119^{\circ}$ son ángulos correspondientes, entonces $9x+2 = 119$.
Step2: Resolver ecuación para x
Restar 2 de ambos lados: $9x=119 - 2=117$. Luego dividir por 9: $x=\frac{117}{9}=13$.
Step1: Identificar ángulos alternos internos
Los ángulos $(12x - 8)^{\circ}$ y $104^{\circ}$ son ángulos alternos internos, entonces $12x-8 = 104$.
Step2: Resolver ecuación para x
Sumar 8 a ambos lados: $12x=104 + 8=112$. Luego dividir por 12: $x=\frac{112}{12}=\frac{28}{3}$.
Step1: Identificar ángulos correspondientes
Los ángulos $(5x + 7)^{\circ}$ y $(8x - 71)^{\circ}$ son ángulos correspondientes, entonces $5x+7=8x - 71$.
Step2: Resolver ecuación para x
Restar $5x$ de ambos lados: $7 = 3x-71$. Sumar 71 a ambos lados: $3x=7 + 71 = 78$. Dividir por 3: $x = 26$.
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$x = 13$
6.