Answer:
7x-4
Step-by-step explanation:
step 1 -2x+ 1 (9x-4)
Pretend there is an imaginary 1 in front of the parenthesis then, multiply 9*1 and 1*-4.
step 2 -2x + 9x -4
combine the numbers in bold which is -7x.
Answer- 7x -4
