Question

3/4=x/12 x=?
what's the answer?? ​

Answer 1

Answer:

x=9

Step-by-step explanation:

$\frac{3}{4} = \frac{x}{12}$

$cross \: multiply \\ \\ 12 \times 3 = 4 \times x \\ \\ 36 = 4x \\ \\ x = \frac{36}{4} = 9 \\ \\ x = 9$

Answer 2

Step-by-step explanation:

$\frac{3}{4} = \frac{x}{12} \\ by \: crossmultiplication \\ 12 \times 3 = 4 \times x \\ 4 \times x = 12 \times 3 \\ x = \frac{12 \times 3}{4} \\ x = 3 \times 3 \\ x = 9$