Постав лутшу відповідь пж
Simplifying
x = 3x + -1(-9x + -1(7x + -15) + 3) + -9
Reorder the terms:
x = 3x + -1(-9x + -1(-15 + 7x) + 3) + -9
x = 3x + -1(-9x + (-15 * -1 + 7x * -1) + 3) + -9
x = 3x + -1(-9x + (15 + -7x) + 3) + -9
Reorder the terms:
x = 3x + -1(15 + 3 + -9x + -7x) + -9
Combine like terms: 15 + 3 = 18
x = 3x + -1(18 + -9x + -7x) + -9
Combine like terms: -9x + -7x = -16x
x = 3x + -1(18 + -16x) + -9
x = 3x + (18 * -1 + -16x * -1) + -9
x = 3x + (-18 + 16x) + -9
Reorder the terms:
x = -18 + -9 + 3x + 16x
Combine like terms: -18 + -9 = -27
x = -27 + 3x + 16x
Combine like terms: 3x + 16x = 19x
x = -27 + 19x
Solving
x = -27 + 19x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-19x' to each side of the equation.
x + -19x = -27 + 19x + -19x
Combine like terms: x + -19x = -18x
-18x = -27 + 19x + -19x
Combine like terms: 19x + -19x = 0
-18x = -27 + 0
-18x = -27
Divide each side by '-18'.
x = 1.5
Simplifying
x = 1.5