Answer:
-1
Step-by-step explanation:
4x-1=-4
-4+3=-1
33 photos in a 4x to 7x ratio
4x + 7x = 33
11x = 33
x = 3
33 photos can be put in a 4(3) to 7(3) ratio
which is a 12 to 21 ratio
so 12 photos on one side, and 21 on the other side to get the ratio of 4 to 7
Note:
<span>a(b) = ab = a x b = a times b</span>
0.5(2x+2)=-4
Multiply by 2 on both sides
2x+2=-8
Subtract 2 on both sides
2x=-10
Divide by 2 on both sides
x=-5
