Answer:
n=-1
Step-by-step explanation:
7n + 28 = 21
subtract 28 on both sides
7n= -7
divide by seven on both sides
n= -1
Answer:
A
Step-by-step explanation:
Answer:
1, 2 and 4
Step-by-step explanation:
1.32m2/16m +48m/16m =2m +3
2.4m2/2m +6m/2m =2m+3
4.10m2 /5m +15m/5m= 2m+3
X = 4
EXPLANATION:
45/60 can be simplified by dividing both 45 and 60 by the same number.
We already know the numerator is 3.
so we have to do the equation 45 divided by 3. which is 15.
so now we do 60 divided by 15 to find x.
So x = 4
An expression becomes an equation by adding an equal sign to the end of the expression and if there's a number on the other side of the equation. For example, 4+3 becomes an equation if you put 4+3=7. Or, 4+3=2+5. Good luck!
