PLZ HELP DUE TODAY 100 POINTS AND BRAINLIEST!! PLZ HELP I WILL BE SO GRATEFUL! determine whether the expressions are equivalent

1. 8 + ( 2 x 3 ) - 6 ÷ 2 and 8 + 2 x 3 - 6 ÷ 2
2. 12 ÷ ( 2 + 1 ) + 6 x 2 and 12 ÷ 2 + 1 + 6 x 2
3. ( 6.5 x 4 ) × 2.25 + 4 - 2 and 6.5 x 4 × 2.25 + 4 - 2
4. 6 + 3 × ( 4 1/2 - 2 3/8 ) - 7 and 6 + 3 × 4 1/2 - 2 3/8 - 7

in 5 through 8, insert operation signs and grouping symbols to make the numerical expressions on the left equal to the given values.

5. 1 2 3 4 5 = 1
6. 1 2 3 4 5 = 3
7. 1 2 3 4 5 = 5
8. 1 2 3 4 5 = 10