Solution:
<u>Step-1: Multiply 2 to an equation such that a term is equivalent.</u>
5x + 4y = 21
5x + 4y = 21
5x + 4y = 21
<u>Step-2: Subtract the equations to remove the y variable.</u>
-5x - 4y = -21
<u>Step-3: Divide to obtain the x variable.</u>
- -11x = -99
- => x = -99/-11
- => x = 9
<u>Step-4: Substitute the value of x into any equation to obtain the value of y.</u>
- -3x + 2y = -39
- => -3(9) + 2y = -39
- => -27 + 2y = -39
- => 2y = -39 + 27
- => 2y = -12
- => y = -6
Hence, the solution to your question is (9,-6).
12/10 = 1.2
4/10 = 0.4
1.2-0.4 = 0.8
I believe it would be 3/8
