Answer:
x=-2 and y=2
Step-by-step explanation:
Do simultaneous equations
-8x + 4y = 24 <em>(multiply everything in the equation by -7)</em>
-7x + 7y = 28 <em>(multiply everything in the equation by 8)</em>
56x - 28y = -168
-56x + 56y = 224
<em>(add equations, ie add 'x' parts, 'y' parts, and numerical parts)</em>
<em> </em>28y = 56
∴y = 2
-8x + 4y = 24
-8x + 4(2) = 24
-8x = 16
∴x=-2
Lemme know if you have questions :D
Answer:
Step-by-step explanation:
45/123 = 0.3658.... ≈0.37
Hope this is able to be useful
The answer is -5760
12(24-42(12))
12(24-504)
12(-480)
-5760
I hope this helps!
40 is 1 tenth because 40 x 10 is 400
