1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
anygoal [31]
3 years ago
9

Solve the system of linear equations using substitution. The system is x=2y + 7 and 3x-2y=3

Mathematics
1 answer:
ivanzaharov [21]3 years ago
6 0
First, solve for either x or y. Since the first is already solved for x, solve the second for x as well;
x=2y+7\\3x-2y=3\\\\ 3x-2y=3\\3x=2y+3\\x=\frac{2}{3}y+1\\\\ Since~x=x,~substitute~equations~in:\\x=x\\2y+7=\frac{2}{3}y+1\\1\frac{1}{3}y=-6\\y=\frac{-6}{\frac{4}{3}}=-6*\frac{3}{4}\\y=\frac{-9}{2}=-4.5\\\\ Plug~-4.5~in~for~y:\\x=2y+7\\x=2(-4.5)+7\\x=-9+7=-2\\\\ x=-2\\y=-4.5
You might be interested in
PLEASE HELP ME THESE ARE MY LAST POINTS PLEASEEE
Julli [10]
About 16 copies cost the same amounts
5 0
3 years ago
Read 2 more answers
Find the slope between these two points: (5,0) and (-1,12)
Ede4ka [16]
The slope of this function is -2
7 0
3 years ago
Please help me with this
Drupady [299]
The answer is d   9,891


3 0
2 years ago
A basketball team playd 64 games they won 28 more than they lost
natka813 [3]
They won 46 games. They lost 18 games.
7 0
2 years ago
108 inches equals blank yard
inysia [295]
Answer: It would be 3 yards
<span>1 Yard = 36 Inches
</span>36+36+36= 108 inches
So its 3 yards. 
Hope i helped
4 0
3 years ago
Other questions:
  • Find the value of this expression if x = 2 and<br> y = 1.
    9·1 answer
  • Of the town's 42 firefighters, 16 volunteered for the special rescue team. Express the portion who did not volunteer.
    13·1 answer
  • A system of equations is shown below:
    7·1 answer
  • If the quotient of 18 3/5 is increased by 10 whats the solution?
    11·1 answer
  • 1 (06.06 LC
    12·1 answer
  • a shopkeepee bought 7 books for rs.525 and sold 4 books for rs 360 .if he/she sold the remaining books at the same rate of cost
    6·1 answer
  • Austin deposits $2,250 into a one-year CD at an interest rate of
    11·1 answer
  • Send help...I know what to do but like...
    7·1 answer
  • Sparky the Bear is atop a 100 foot tower. He is looking out over a fairly level area for careless people who might start fires.
    8·1 answer
  • Find the area and perimeter of a nonagon, inscribed in a circle, with radius 4 inches​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!