Ecuaciones Lineales - Soluciones
Solución 1
\[3x = -11\]
\[x = \boxed{\frac{-11}{3}}\]
\[x = \boxed{\frac{-11}{3}}\]
Solución 2
\[-10x = 1\]
\[x = \boxed{\frac{-1}{10}}\]
\[x = \boxed{\frac{-1}{10}}\]
Solución 3
\[12x = -5\]
\[x = \boxed{\frac{-5}{12}}\]
\[x = \boxed{\frac{-5}{12}}\]
Solución 4
\[-5 ( 9x - 7 ) = 530\]
\[x = \boxed{-11}\]
\[x = \boxed{-11}\]
Solución 5
\[-2 ( 7x - 11 ) = -48\]
\[x = \boxed{5}\]
\[x = \boxed{5}\]
Solución 6
\[-3 ( -3x - 8 ) = 6\]
\[x = \boxed{-2}\]
\[x = \boxed{-2}\]
Solución 7
\[\frac{-8}{19} ( x + \frac{5}{4}) = \frac{-2}{3}\]
\[x = \boxed{\frac{1}{3}}\]
\[x = \boxed{\frac{1}{3}}\]
Solución 8
\[\frac{-2}{7} ( \frac{3}{5}x + 2) = \frac{-2}{5}\]
\[x = \boxed{-1}\]
\[x = \boxed{-1}\]
Solución 9
\[\frac{5}{21} ( \frac{-1}{4}x + 3) = \frac{5}{4}\]
\[x = \boxed{-9}\]
\[x = \boxed{-9}\]
Solución 10
\[\text{A father is 3 years older than his son. If the father is 18 years old, how old is the son?}\]
\[\textit{(Write the mathematical equations that solve this problem and solve it.)}\]
\[\boxed{15}\text{ years old.}\]
\[\textit{(Write the mathematical equations that solve this problem and solve it.)}\]
\[\boxed{15}\text{ years old.}\]
Solución 11
\[\text{A teacher divided 20 students into 5 equal groups. How many students are in each group?}\]
\[\textit{(Write the mathematical equations that solve this problem and solve it.)}\]
\[\boxed{4}\text{ students.}\]
\[\textit{(Write the mathematical equations that solve this problem and solve it.)}\]
\[\boxed{4}\text{ students.}\]
Solución 12
\[\text{Maria saves the same amount of money each week. After 4 weeks, she has saved 40 dollars. How much does she save per week?}\]
\[\textit{(Write the mathematical equations that solve this problem and solve it.)}\]
\[\boxed{10}\text{ dollars.}\]
\[\textit{(Write the mathematical equations that solve this problem and solve it.)}\]
\[\boxed{10}\text{ dollars.}\]