Presumably this is a simultaneuos equation question that can be solved using the elimination method:
2(2x-3y = 11)
3(5x+2y = 18)
Multiply all terms in the top equation by 2 and in the bottom by 3:
4x-6y = 22
15x+6y =54
Add both equations together:
19x = 76
Divide both sides by 19 to find the value of x:
x = 4
Substitute the value of x into the original equations to find the value of y:
Therefore: x = 4 and y = -1
X - 7 = 11 X = 11+7 therefore X = 18 18 minus 7 equals 11.
18
-11
How do you add 2x plus 3y equals 18 in 5x-y equals 11
(Positive) 7.
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If: w-7 = 11 Then: w = 18
2+14=16
18 minus 11 is 7.
-29
160
If you are thinking of a simple subtraction problem: 18 minus 11 equals 7. 18 is the minuend, 11 is the subtrahend, and 7 is the difference.