Answer:.
Step-by-step explanation:
(x , y) = (7, - 1)
2x + 3y = 11 → (1)
3x + 3y = 18 → (2)
subtracting (1) from (2) term by term eliminates the y- term
(3x - 2x) + (3y - 3y) = (18 - 11)
x + 0 = 7 ⇒ x = 7
substitute x = 7 into either of the 2 equations and solve for y
(1) → (2 × 7) + 3y = 11
14 + 3y = 11
subtract 14 from both sides
3y = 11 - 14 = - 3
divide both sides by 3
= - 1
solution is (7 , -1)
Answer: 24
Work: 4x= 4•12, yz = 8•3, so you have to do 48 (4 times 12) - 24 (8 times 3)
Answer:
its B ITHINK
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
45-5(5 years older)= 40
40÷2 =20
Shaniya has 20
and Kiana 25