5x-50= 30-15x
20x= 80
x= 4 is the solution to this problem
Answer:
The answer is -6.
Step-by-step explanation:
0^2 = 0
5(0) = 0
0+0-6=-6
1. x+5y=8
2x- 5y=1 What you do is find the number/variable that are the same( here is is the +5y and -5y. You want them to be opposites(-,+) so that they cancel each other out. if they are not opposites, then multiply one equation by a negative sign to change it. Cross out the 5y's. Now you can combine like terms-x+2x=3x, and 8+1=9, so now your equation will look like this:
3x=9
x=9/3
x=3
now take x=3 and plug it into the first equation to solve for y. x+5y=8, so 3+5y=8
5y=8-3
5y=5
y=5/5
y=1
(3,1) are your answers.
now do the same with the other problems.
Step-by-step explanation:
4.25× 1.59 = 6.7575 = $7
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hope this will be helpful to you.
