7+ 3x= -8
-8-7=-15
-15 divided by 3= -5
-5 is the answer
Answer:
it's J
Step-by-step explanation
kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk mark me brainkiesrt plssss
Answer: 1.) x - 2y = 4 , add 2y to both sides. ---> answer is, X = 2y + 4
2.) 2x - 6y = 8, Add 6y to both sides, then divide both sides by 2. --> answer is, X = 3y + 4
Answer:
x²+1/x² = 51
Explanation:
Given x - 1/x = 7 ---(1)
We know the algebraic identity:
a²+b²-2ab = (a-b)²
Or
a²+b² = (a-b)²+2ab
Now,
x²+1/x²
= (x-1/x)²+2*x*(1/x)
= (x-1/x)²+2
:7²+2 [ from (1)] =
= 49+2
= 51
Therefore,
x²+1/x² = 51
M a t h w a y will help you my friend!
I was struggling with math and using it got me get back on track :)