what value of x makes the equation true? 2x - 1 = 9
The value of x that makes the equation true is 5.
2(5) - 1 = 10 - 1 = 9.
(7x + 8) - (3x + 5)
To simplify this expression, we first need to distribute the negative sign in front of the second parentheses:
(7x + 8) - (3x + 5)
= 7x + 8 - 3x - 5
= (7x - 3x) + (8 - 5)
= 4x + 3
Therefore, the simplified expression is 4x + 3.
3(x - 1)
To simplify this expression, we need to distribute the 3 to both terms inside the parentheses:
3(x - 1) = 3*x - 3*1 = 3x - 3
Therefore, the simplified expression is 3x - 3.