Use y=-3x+5 on this equation 5x-4y=-3
5x-4(-3x+5) = -3
5x+12x-20 = -3
17x=17
x=1
y=-3x+5
for x=1;
y=-3+5
y=2
Answer:
I'm not 100% positive but I think it's B.
Ron’s class donated d dollars to a local charity.
=> Let's use d as an expression of the donation of Ron's class.
Danny’s class donated 21% more than ron’s class.
Let's show this into expression
Expression:
=> 21% / 100% = 0.21
Danny's Class donation=> d + d(.21), where d is the amount of the donation of Ron's class and 0.21 is the 21% of Danny's class
Answer:
12.5
Step-by-step explanation:
1) Original equation: 3(2) - 18x +225 = 6
2) Simplify: 6 - 18x + 225 = 6
3) Move 18x over to the right: 6 + 225 = 6 + 18x
4) Move the 6 on the right over to the left: 225 = 18x
5) Divide both sides by 18 to isolate x: 225/18, 18x/18
6) x = 12.5
Answer:
26
Step-by-step explanation:
32 + (-3 + 2) x 6
Parentheses first
32 + (-1) x 6
Multiply and divide
32-6
26
