I would try Khan Academy. He does very good explainations
Answer: To check a solution, you can substitute the solutions into the equations and verify that both equations are true.
Step-by-step explanation:
Take out the constants.
(
3
×
3
)
x
x
(3×3)xx
2 Simplify
3
×
3
3×3 to
9
9.
9
x
x
9xx
3 Use Product Rule:
x
a
x
b
=
x
a
+
b
x
a
x
b
=x
a+b
.
9
x
2
9x
2
The factory makes 27 dresses.
<u>Step-by-step explanation</u>:
- It produces three dresses for every five shirts.
- Let x be the sets of five shirts produced.
- Therefore, x sets of three dresses are produced along with five shirts.
Total garments = number of shirts + number of dresses
⇒ 72 = 5x + 3x
⇒ 72 = 8x
⇒ x = 9
The number of dresses is 3x = 3(9) = 27 dresses.
