+449 Hallie wrote the expression 21m - 18n. McKenzie wrote an expression equivalent to Hallie's. Which expression could McKenzie have written?
Which of the following is equivalent to (5c - 2c)(d + 4)?
Which expression is equivalent to 6s + 4t - 5(s + t)?
+23252 For the first question, start at the top and use the Distributive Law until you find one that works:
3(7m - 6n) = 3(7) - 3(6m) = <--- finish this
2(6m - 9n) = 2(6m) - 2(9m) = <--- finish this
(etc.)
Second question: (5c - 2c)(d + 4)
first: simplify 5c - 2c = 3c ---> 3c(d + 4)
then, use the Distributive Law: 3c(d) + 3c(4) = <--- finish this
Third question: 6s + 4t - 5(s + t)
= 6s + 4t - 5(s) - 5(t)
= 6s + 4t - 5s - 5t <--- finish this
+23252 For the first question, start at the top and use the Distributive Law until you find one that works:
3(7m - 6n) = 3(7) - 3(6m) = <--- finish this
2(6m - 9n) = 2(6m) - 2(9m) = <--- finish this
(etc.)
Second question: (5c - 2c)(d + 4)
first: simplify 5c - 2c = 3c ---> 3c(d + 4)
then, use the Distributive Law: 3c(d) + 3c(4) = <--- finish this
Third question: 6s + 4t - 5(s + t)
= 6s + 4t - 5(s) - 5(t)
= 6s + 4t - 5s - 5t <--- finish this
