The first and the 2nd one are correct because x is 21 and y is 49
3 and 4 at wrong
First, multiply. 7x-14-4x+9. Now, add the like terms. 3x-5.
Answer:
This is the commutative property of multiplication.
Step-by-step explanation:
This property states that we can multiply numbers in any order and still get the same number. Each side is the same operation in a different order.
Answer:
<A=50
Step-by-step explanation:
85+x+55+x+50=180
2x+190=180
2x=180-190
2x=-10
x=-5
A=x+55
A=-5+55
A=50
3(x + 4) = x/2 - 8
First, we can multiply both sides by 2:
6(x+4) = x - 16
6x + 24 = x - 16
Isolate x:
5x = -16 - 24
5x = -30
x = -6
