- #1
tionis
Gold Member
- 459
- 67
Hi guys. I'm asked to insert parentheses where needed so that the following expression evaluates to the given number negative 36:
2 ⋅ 8 ÷ 4 - 20 = - 36
My attempts:
( 2 ⋅ 8 ) ÷ ( 4 - 20 ) = 16 ÷ -16 = -1
2 ⋅ ( 8 ÷ 4 ) - 20 = 2 ( 2 ) - 20 = -16
( 2 ⋅ 8 ÷ 4 ) - 20 = -16
I just don't know what other combination I can try that will yield -36 as a solution. Please help me. Thanks.
2 ⋅ 8 ÷ 4 - 20 = - 36
My attempts:
( 2 ⋅ 8 ) ÷ ( 4 - 20 ) = 16 ÷ -16 = -1
2 ⋅ ( 8 ÷ 4 ) - 20 = 2 ( 2 ) - 20 = -16
( 2 ⋅ 8 ÷ 4 ) - 20 = -16
I just don't know what other combination I can try that will yield -36 as a solution. Please help me. Thanks.