Question

Which value of x makes the equation 1.25(4x − 10) = 7.5 true?

A) 3.5
B) -1
C) -0.5
D) 4

Answer 1

Answer:

4

Step-by-step explanation:

plug 4 into x

parentheses first, 4x4 is 16, 16 - 10 is 6

6 times 1.25 is 7.5

Answer 2

The value of x which makes the given algebraic expression to be true is 4.

In this exercise, you're required to determine or solve for the value of x which makes the given algebraic expression to be true.

Given the following data:

$1.25(4x - 10) = 7.5$

First of all, we would open the bracket;

$5x - 12.5 = 7.5$

Rearranging the equation (collecting like terms), we have;

$5x = 7.5 + 12.5\\\\5x = 20\\\\x = \frac{20}{5}$

x = 4

Therefore, the value of x which makes the given algebraic expression to be true is 4.

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