Simplify the given equation. 6 - (3x + 10) + 4(2 - x) = 15 4 - 7x = 15 4 - 4x = 15 12 - 7x = 15

The answer would be A.
Simplifying 6 + -1(3x + 10) + 4(2 + -1x) = 15
 Reorder the terms: 6 + -1(10 + 3x) + 4(2 + -1x) = 15
6 + (10 * -1 + 3x * -1) + 4(2 + -1x) = 15 6 + (-10 + -3x) + 4(2 + -1x) = 15 6 + -10 + -3x + (2 * 4 + -1x * 4) = 15 6 + -10 + -3x + (8 + -4x) = 15 Reorder the terms: 6 + -10 + 8 + -3x + -4x = 15 Combine like terms: 6 + -10 = -4 -4 + 8 + -3x + -4x = 15 Combine like terms: -4 + 8 = 4 4 + -3x + -4x = 15 Combine like terms: -3x + -4x = -7x 4 + -7x = 15 Solving 4 + -7x = 15