herandylucas
herandylucas herandylucas
  • 05-02-2014
  • Mathematics
contestada

Substitution how do u do it??

Substitution how do u do it class=

Respuesta :

crisforp
crisforp crisforp
  • 05-02-2014
3x-(2x+7) = -9 <=> x -7 = -9 <=> x = -2; y = 2(-2) + 7 = 3.
Answer Link

Otras preguntas

does a negative exponent mean that the number is less than 1 yes or no​
Gretchen made a paper cone to hold a gift for a friend. The paper cone was 15 inches high and had a radius of 3 inches. Find the volume of the paper cone to the
In space, are fires possible without oxygen? If so how would it happen?
(06.01) The tables below show four sets of data: Set B Set A x[1 2131415161718 19 y3 45161718 91011 X 1 |2|3|4|5161 y 10 817161514317 Setc Set D 1234 5 6 7 189
The triangles at the right are similar. What is the ratio (larger to smaller ) of the perimeters ?
If the total area of a dartboard is 804 in2 and the area of the bull's-eye is 50in2, what is the probability that a dart that randomly hits the dartboard will h
The largest ecosystem in the world is ______________, where 2/3 of all species live.
#4: Look at these pictures. Where are the people in relation to each other? Use location words in a complete sentence to describe each picture. Picture #1 Pictu
when a political group grand stands or exagerates it's position to the public it can be said that it is approval
would really appreciate the help!:(