Answer:
D
Step-by-step explanation:
is the correct answer.....
Answer:
-2x+53
Step-by-step explanation:
42+5+6=53
leave the -2x
(the two is negative because we were previously subtracting)
Answer:
1. Solving
we get x=3
2. Solving
we get x=-1
Step-by-step explanation:
We need to solve the equations:
1. 
Expanding the brackets

Taking LCM on left side we get 12

Add 7/12 on both sides

Adding x/12 on both sides and simplifying

Multiply both sides by 12/3

So, solving
we get x=3
2. 
Taking LCM and solving:

Cross multiplying

So, solving
we get x=-1
The word 'difference' indicates the use of subtraction in a Mathematical sum
The error is that the sum could be 15 - 5y instead of 5y - 15
A subtraction sum does not have the commutative properties, meaning that we cannot do the sum in any order.
A sum 15 - 5y will give a different result with the sum 5y - 15 for the same value of y.
Answer:
3.14
Step-by-step explanation: