<span>3(7x+ 1) = 21
21x + 3 = 21
21x = 18
x = 6/7
hope this helps!</span>
-18=7-4y
-7 -7
________
-25=-4y
___ ___
-4 -4
y= 6.25
Answer:
Step-by-step explanation:
115+4n-5=180 degree (being straight line)
110-4n=180
4n=180-110
n=70/4
n=17.5
therefore the value of n is 17.5 degree
substitute the value of n
4n-5
4*17.5-5
70-5
65
Fraction of girls = 1 - 3/7 = 4/7
4/7 is equivalent to 72 girls
1/7 .. .. ............. 72 / 4 = 18
Total number of children = 7/7 = 18*7 = 126 Answer