[tex}r - 5 \frac{5}6 + 5\frac{5}6 = 10 +5\frac{5}6{/tex]
14 houses does not have street light
20/3~6
20-6=14
The best answer is to ship through 7.25$
Thus is cheaper then the coupon
Set this up as follows...
12x - 10 = 7x + 20
solve for x
X is 6
sub VW=7X with 7•6
VW=42
check by subbing also for UW
72 - 10 is 62
uV plus VW equals 62. it checks out.
Answer:
-8,-29
Step-by-step explanation:
a - b = 21 --------------------------Equation 1
5a - 2b = 18 ----------------------Equation 2
From Equation 1, a = 21 + b
Putting the values of a in Equation 2 we get;
5(21 + b) - 2b = 18
105 + 5b - 2b = 18
3b = 18 - 105
b = -87 / 3
b = -29
Putting the values of b in Equation 1 we get;
a = 21 + (-29)
a = 21 - 29
a = -8