-4x - 7 = 16
-4x = 16 + 7
-4x = 23
x = -23/4
x = -5.75
Check:
-4(-5.74) - 7 = 16
23 - 7 = 16
16 = 16
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Yes, because: x+7 = 23 x = 23-7 x = 16
If: -x-3y = -4 and 3x+5y = 16 Then: x = 7 and y = -1
If x=4 then 2x+7 =
If the x=4, then its equivelent to 12 + 4, which equals 16.
x = 7