Answer:
These are simultaneous equations.They have to be solved like this:
2x-y=3 -y=3-2x 2x-3= -x
y= -x y= -(3-2x) 3x= 3
y=2x-3 x=1
Step-by-step explanation:
The value of x equals to 1
Answer:
-3
Step-by-step explanation:
4x + 25 = 13 ➡ 4x = 13 - 25 ➡x = -3
Answer:
9 9/10
Step-by-step explanation:
amount of them
= 3 1/2 + 6 2/5
= 7/2 + 32/5
= 35/10 + 64/10
= 99/10
= 9 9/10