mayansoul2005 mayansoul2005
  • 19-10-2020
  • Mathematics
contestada

Solve for x and y please ASAP it is urgent, please give a logical explanation, will rate highly and award brainliest.

-7x+5y=-8
9x-8y=15

Solve for x and y please ASAP it is urgent please give a logical explanation will rate highly and award brainliest 7x5y8 9x8y15 class=

Respuesta :

tianabrice96
tianabrice96 tianabrice96
  • 20-10-2020
Answer is (-1,-3)
Step by step explanation:
Solving for x:
-7x+5y=-8
Multiply both side’s by 8
-56x+40y=-64

9x-8y=15
Multiply both sides by 5
45x-40y=75

Subtract
-56x+40y=-64
45x-40y=75
-11x=11
-11x/-11 = 11/-11
x=1

Substitute -1 for x to get y
-7(-1)+5y=-8
Multiply 7 and -1
7+5y=-8
Then subtract 7 from both sides
5y=-15
Then divide both sides by 5
Y=-3

Answer Link

Otras preguntas

Providing a free public education for all children is an example of supporting
La siguiente oración sepuede añadir al pasaje: Cada individuo se transforma en miembro de algo más grande que si mismo. ¿Dónde serviría mejor la oración?A. prim
1. .Elige tu o tus: Ellos son ____ hermanos. a. tu b. tus 2. Choose the best answer for the blank in the sentence: ¿Donde ____ tú? a. trabajas b. trabajan c. t
Part A Which statement best describes the type of conflict Malik overcomes? Malik vs. his mother: He must learn how to enjoy himself despite his mother's attitu
German: Help please Wie ______ Ihnen?
what is the smallest integer greater than 68
Identify the food groups as macronutrients or micronutrients.
If one angle of a parallelogram is 60 degrees, find the number of degrees in the remaining three angles.
how do i solve this using the quadratic formula? (45 points)
Which principle was established in the school-sponsored prayer case of Engel v Vitale