x = 5, y = 1
x = 12, y = 1
If 5x plus 3y equals 13, the x equals 2 and y equals 1. This is because 5x2=10 and 3x1=3, and 10+3=13.
The answer is 144. The compound operator for (a) and (b) in each pair is a * (a+b). For 9 and 7, this is 9 x (9+7) = 9 x 16 = 144.
-4 plus 10 equals 6.
If x equals 10 and y equals 10, then 9x plus 8y equals 170.
By listed sequence, it is 5 plus 10 = 15 divided by 5 equals 3. By order of operations, it is 5 + (10/5) = 5 + 2 equals 7.
x = 3 and y = 4 so the lines intersect at (3, 4)
x = 4 and y = -1 (4. -1)
x=10
12 + 10 + 11 equals 33
-10 plus 10 equals 0.
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