Answer:
4x + 10y = 36 ≡ to 2x + 5y = 18
As you can see, the the coefficients on the first one are double those in the second.
12x - 9y = -60 ≡ to -4x + 3y = 20
In this case, the terms in the first one are all the same, but multiplied by -3
And by simple elimination we can say:
-24x - 8y = 40 ≡ -6x - 2y = 10
In this case, the terms of the first equation are equal to those of the latter, but all multiplied by 4.
Answer:
x = -4
Step-by-step explanation:
3x-2(6x-3)=42
Distribute
3x -12x+6 = 42
Combine like terms
-9x+6 = 42
Subtract 6 from each side
-9x+6-6 = 42-6
-9x = 36
Divide each side by -9
-9x/-9 = 36/-9
x = -4
The answer is 94.5 I used a calculator so I am sorry If you need the long division way
Answer:
0.11538461538
Step-by-step explanation:
Hope this helps!!