5x - 17 = x + 7
4x - 17 = 7
4x = 24
x = 6
Check it.
30 - 17 = 13
It checks.
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If: x = 7 Then: y = (2*7)+3 = 17 And: 5x+y = (5*7)+17 = 52
2x + 7 + 5x - 4 - x = (2x + 5x - x) + (7 - 4) = 6x + 3
10x+7 = 5x+32 10x-5x = 32-7 5x = 25 x = 5
If: 10x+7 = 5x+22 Then: 10x-5x = 22-7 And: 5x = 15 So: x = 3
Let, f (x) = - 5x - 9 Therefore, f(x) + 7 = - 5x - 9 + 7 f(x) + 7 = - 5x - 2