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goldenfox
2 months ago
6

Two thirds a number plus 4 is 7

Mathematics
2 answers:
PIT_PIT [12.4K]2 months ago
5 0
Assign the variable "x" to represent the unknown number.

The equation based on the statement is:
_____________________________________
(⅔)x + 4 = 7.
_____________________________________
To solve for "x":

First, subtract "4" from both sides:

(⅔)x + 4 − 4 = 7 − 4;

which simplifies to:

(⅔)x = 3;

Next, multiply both sides by "3" to eliminate the fraction's denominator:

3 × (⅔)x = 3 × 3;

resulting in: 2x = 9;

Finally, divide both sides by "2" to isolate "x":
__________________________________________________
     (2x) / 2 = 9 / 2

x = 9/2 = "4 ½" or "4.5".
_______________________________________




zzz [12.3K]2 months ago
4 0
Let's denote the unknown number as 'n'.
The plus sign represents addition.
The word 'is' corresponds to the equals sign.

So, the expression can be written as: \frac{2}{3} n + 4 = 7
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