milkmandlb milkmandlb
  • 23-02-2015
  • Mathematics
contestada

ii dont understand how to solve a system of linear equations using the substitution method

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 23-02-2015
so 8x-7y=-7
-16+12x=14
you can simplify the sceon equation
-8+6x=7
add 8 to both sides
6x=15
divide by 6
x=15/6
subssitute
8(15/6)-7y=-7
120/6-7y=-7
20-7y=-7
subtract 20
-7y=-27
divide by -7
y=27/7

x=15/6
y=27/7
Answer Link

Otras preguntas

Each kidney contains nephrons that filter the blood and remove waste.
Each kidney contains nephrons that filter the blood and remove waste.
At the tips of shoots and roots can be found what type of tissue? a. ground b. vascular c. dermal d. meristematic
How do scientists obtain knowledge about the world?
Jason pays a $100 installation fee and a $40 monthly service charge for his telephone. Which equation shows the amount that Jason pays for x months of telephone
people in sahel usually work in secondary industry wheres the mistake
the freedom to make your own decisions can be limited if the business you choose is a
the freedom of working for yourself is necessarily limited by
perfume evaporating is it a chemical change or physical change
Why did Germans forces surrender en masse to us and British forces rather than to the soviets towards the end of the war