Question

Two-thirds a number plus 4 is 7

Answer 1

If you put x for "a number,"
     2/3(x) + 4 = 7
     2x/3 = 7-4
     2x/3 = 3
          x = 2

Answer 2

Answer:

The unknown number is 9/2.

Step-by-step explanation:

Let the unknown number be x.

It is given that two-thirds a number plus 4 is 7.

$\frac{2}{3}x+4=7$

Subtract 4 from both sides.

$\frac{2}{3}x+4-4=7-4$

$\frac{2}{3}x=3$

Multiply 3 on both sides.

$2x=9$

Divide both sides by 2.

$x=\frac{9}{2}$

Therefore the unknown number is 9/2.