So the problem is
4x-5=7+4y
solve for y
easy
minus 7 from both sides
4x-5-7=7-7+4y
4x-12=0+4y
4x-12=4y
divide both sides by 4
x-3=y
y=x-3
Answer:
x = 5
Step-by-step explanation:
3x + 6 = 21
3x = 21 - 6
3x/3 = 15/3
x = 5
Answer:
The new length is 13.5 meters
Step-by-step explanation:
Here, we are interested in calculating the new length of the cloth she wants to use
What we know from the question is that she is making a reduction of 10% from an initial of 15 meters
Thus, the length she is to use can be calculated by first getting what 10% of 15 meters is
Mathematically, that would be ;
10/100 * 15 = 1.5 meters
We now subtract this from the total of 15 meters
= 15 meters - 1.5 meters = 13.5 meters
Answer:
y=-2x+5
Step-by-step explanation: