Solve the following equation

x-5/7-2x=5-x/3÷1​

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Which matrix multiplication is possible?

What other information do you need to prove triangle dac=bca by asa