Question

Please find the missing number for this surface answer! I will mark brainiest if correct! 1.

Answer 1

Answer:

2

Step-by-step explanation:

$(2 * 6x) + (2 * 7x) + (2 * (6 * 7)) = 136$

$12x + 14x + (2 * 42) = 136$

$12x + 14x + 84 = 136$

$12x + 14x = 136 - 84$

$26x = 52$

$x = 2$