To simplify the expression 4 1 5 _ (2.7m-2 _n)-4.2( _m-0.5n) 9 4 7, we need to perform the operations using the distributive property and combine like terms.
First, distribute the terms within the parentheses:
4(2.7m) - 4(2_n) - 4.2(_m) + 4.2(0.5n) 1 5 + 4(2.7m) - 4(2_n) - 4.2(_m) + 4.2(0.5n) + 9 4 7
8.7m - 8n - 4.2m + 2.1n + 15 + 9 + 47
Now, combine like terms:
(8.7m - 4.2m) + (-8n + 2.1n) + (15 + 9 + 47)
4.5m - 5.9n + 71
Therefore, the simplified expression is 4.5m - 5.9n + 71.
To simplify the expression 4 1 5 _ (2.7m-2 _n)-4.2( _m-0.5n) 9 4 7, we need to perform the operations using the distributive property and combine like terms.
First, distribute the terms within the parentheses:
4(2.7m) - 4(2_n) - 4.2(_m) + 4.2(0.5n) 1 5 + 4(2.7m) - 4(2_n) - 4.2(_m) + 4.2(0.5n) + 9 4 7
8.7m - 8n - 4.2m + 2.1n + 15 + 9 + 47
Now, combine like terms:
(8.7m - 4.2m) + (-8n + 2.1n) + (15 + 9 + 47)
4.5m - 5.9n + 71
Therefore, the simplified expression is 4.5m - 5.9n + 71.