Which expression is equivalent to t + 4 + 3 - 2t

1. t+7
2. -t+7
3. 6t
4. 10t

Plz which expression is equivalent to the expression below?

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.