Let 11x + 15y + 23 = 0 be equation (1)
And 7x - 2y - 20 = 0 be equation (2)
Multiply equation (1) by 2:
22x + 30y + 46 = 0
Multiply equation (2) by 15:
105x - 30y - 300 = 0
Add equations (1) and (2):
22x + 105x + 30y - 30y + 46 - 300 = 0
127x - 254 = 0
127x = 254
x = 254/127
[x = 2]
Substitute x = 2 in equation (1) to find y:
11(2) + 15y + 23 = 0
22 + 15y + 23 = 0
15y + 45 = 0
15y = -45
y = -45/15
y = -3
Therefore, x = 2 and y = -3.
The two numbers are 23 and 16 and the method is shown algebraically using simultaneous equations in the photo
Answer:
a= c/7b
Step-by-step explanation:
Divide each term by 7b and then simplify.
Hope this helps.
We need to find the price of the fountain first then after the coupon. Luckily, it originally costs 100. So, it won’t be hard to find 35% off since 1%=1. 100-35=65
We gave 65 and we need to take 12 off of it.
65-12
53
So the final price will be $53.