Hello from MrBillDoesMath
Answer: 12, 9
Discussion:
Let x be the first number and y the second number. The form the problem statement:
x + y = 21
x - y = 3
Add the two equations. This gives:
(x + x ) + ( y-y) = 21 + 3 =>
2x + 0 = 24 =>
x = 12
Since x -y =3, substituting in the value of x gives, 12 - y = 3 so y = 9
Thank you,
Mr. B
150. 1:4. 120:30. 120-30=90
Answer:
x=32
Step-by-step explanation:
5x+20=180 can be used to solve this problem because those two angles are supplementary
Solve a simpler problem
make a table
make a drawing
use a graph
use guess-and-check
solve an equation
