Answer:
x = 2, y = 3
Step-by-step explanation:
x + y = 5
Shift y to the other side and change to (-y).
x = 5 - y --- Equation 1
x - 2y = -4 --- Equation 2
Substitute x = 5 - y into Equation 2:
x - 2y = -4
5 - y - 2y = -4
Shift 5 to the other side and change to (-5).
-y - 2y = -4 - 5
Evaluate like terms.
-3y = -9
Divide both sides by -3.
y = -9 ÷ -3
y = 3
Substitute y = 3 into Equation 1:
x = 5 - y
x = 5 - 3
x = 2
Use Desmos, you can type in any equation (such as this one) and it’ll form a graph for you desmos.com/calculator
Answer: what's the question here?
Step-by-step explanation:
3times figure number plus the 4 original.
3n +4= number of circles in figure
So (3times23)+4= number in 23 figure (73)
Then 3n+4= 82
-4 from each side to keep equation balanced (78) then divide 78 by three which equals 26.