Match each step to its justification to solve 2x + 5 = 19.
2x + 5 = 19
subtract
x = 7
divide
2x/2 = 1412
given
2x = 14
Subtraction property of equality
2x + 5-5 = 19-5
division property of equality
Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.
Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?