If x=4 then 2x+7 =
-7 +2x = x + 8 2x - x = 7 + 8 x = 15
X=7
It equals 7 since 2x = 7+x where 2 has 2x but 7 is one x because there is only one x . So it is 7.
x = 3
If x=4 then 2x+7 =
-7 +2x = x + 8 2x - x = 7 + 8 x = 15
X=7
It equals 7 since 2x = 7+x where 2 has 2x but 7 is one x because there is only one x . So it is 7.
7
2x + 7 + 2x = 23 4x + 7 = 23 4x = 16 x = 16/4 x = 4
x = 3
4x - 7 = 2x + 5 2x - 7 = 5 2x = 12 x = 6.
2x+3 = 7 2x = 7-3 2x = 4 x = 2
x = 7
It is an equation and the value of x is 1
f(x) = 2x + 8 f(x) = -7 → 2x + 8 = -7 → 2x = -15 → x = -7½ = -7.5