Well i did this in my notes and i found this
Answer:
x = 7
Step-by-step explanation:
First, move the variables and numbers to the opposite sides
-3x = 12 - 33
Then add and subtract
-3x = -21
Divide and multiply
-x = -7
x = 7
You divide 1540 by 220 to get 7. We do this because we want to find how many times 220 can go in 1540 which shows the amount of ft tall the scale will be. We can check it by doing 7 × 220 which is 1,540.
The building will be 7 ft tall in the scale.
Answer:
147 cats
Step-by-step explanation
There are 3 dogs/ 7 cats
3x + 7x = 210
10x = 210
210 ÷ 10 = 21
Therefore,
x = 21.
dogs would be 3x (3 x 21) = 63
cats would be 7x (7 x 21) = 147
