Hi there,
- 26.8r - 26.9 = 18.3r + 20.7
- 26.8r - 18.3r = 20.7 + 26.9
Then cellect the like term, and calculate the sum
- 45.1r = 47.6
Divide both sides by -45.1
Here are the answers:
====> r = 1.05543
====> -476/451
====> 1 25/451
Hope this helps :)
Answer:
the answer is b.
Step-by-step explanation:
8 less indicates that 8 is being subtracted from a number.
the product of six and a number means multiplication so (6)(x).
with these statements, 8 would have to be subtracted from six times x
= 3x + 9x = 6x + 42
= 3x + 9x - 6x = 42 ( transposing +6x from LHS to RHS changes +6x to -6x )
= 12x - 6x = 42
= 6x = 42
= x = 42 ÷ 6 ( transposing ×6 from LHS to RHS changes ×6 to ÷6 )
= x = 7
Let us check whether we have found out the correct value of x or not by placing 7 in the place of x :
= ( 3 × 7 ) + ( 9 × 7 ) = 6 × 7 + 42
= 21 + 63 = 42 + 42
= 84 = 84
= LHS = RHS
Hence proved we have derived the correct value of x .
Therefore , the value of x = 7 .
I think it is going to be 3.55 for each notebook and 1.9 for each pen