100 POINTS PLS HELP

Add parenthesis and grouping symbols to each order of operations problem to make the equation true.
1. 4 ✖️ 3 + 7 - 6 ✖️ 1 + 4 = 20


2. 60 - 18 ➗ 2 + 4 + 10 ➗ 2 = 12



3. 80 - 36 ➗ 2 + 6 - 2 ✖️ 5 + 1 = 44



4. 3 ✖️ 5 + 4 - 2 ✖️ 2 + 6 - 4 = 15