lukerothbacher lukerothbacher
  • 02-02-2019
  • Mathematics
contestada

3x + 4y = 5
X- 3y = -7


Solve by substitution

Respuesta :

meredith48034
meredith48034 meredith48034
  • 02-02-2019
x = 3y - 7
3x + 4y = 5

3(3y - 7) + 4y = 5
9y - 21 + 4y = 5

13y - 21 = 5

13y = 26

y = 2

x - 3(2)= -7

x - 6 = -7

x = -1

(-1, 2)
Answer Link

Otras preguntas

Please solve 28 and 29 I need help
Find the sum of 4x2 - 4x + 10 and 2x2 + 5x – 8.
pls answer quickly and include details
PLS HELP ME NOWWhat is it? Which unit is used to measure it? How is it indicated on the wave? Another fact about it is: PitchLoudness Contrast pitch and loudnes
Find the measure of x. 10 х 20° x = [? ] Round your answer to the nearest hundredth.
How I can answer this question, NO LINKS, if you answer correctly I will give u brainliest!
Giving brainlest for correct answer Please solve ??-3/10=1/5
Using the graph, predict how many paper clips a 7.5 V battery would pick up for both the 25-coil electromagnet and the 50-coil electromagnet. Explain your reaso
pls help i will give brainliest!
plz help me! i need answers for this