2x+x-5 = 10
2x+x = 10+5
3x = 15
x = 5 and y = 0
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you need 2 equations to solve for 2 variables
x+y = 10 and y = x+8 x+x+8 = 10 x+x = 10-8 2x = 2 x = 1 Substitute the value of x into the original equations to find the value of y: So: x = 1 and y = 9
-4 plus 10 equals 6.
x=10
12 + 10 + 11 equals 33