Answer:
What is the base in the expression 45? 4 5 9 20
1 answer:
You might be interested in
Answer:
x = 2, y = 4
Step-by-step explanation:
x + y = 5 ( multiply through by 4 to clear the fraction )
4x + 3y = 20 → (1)
x - y = 0 ( multiply through by 2 to clear the fraction )
2x - y = 0 → (2)
Multiplying (2) by 3 and adding to (1) will eliminate y
6x - 3y = 0 → (3)
Add (1) and (3) term by term to eliminate y
10x + 0 = 20
10x = 20 ( divide both sides by 10 )
x = 2
Substitute x = 2 into either of the 2 equations and solve for y
Substituting into (1)
4(2) + 3y = 20
8 + 3y = 20 ( subtract 8 from both sides )
3y = 12 ( divide both sides by 3 )
y = 4
Solution is x = 2, y = 4