1. 15 (-42x + 40) = 15 (-8x + 244)
2. 2x - 3y = 8 solve for y.
3. Simplify the following expression. -2(4x - 3y + 7) + 5(-x + 3) - (4x - 3y - 8)
4. Identify the terms, like terms, coefficients, and constant terms. Then simplify the expression.
13 + 2a - 7b + 11 - 3a + 11b - 24 - a