8.)10/x + x = 7
15.) s= 4+15/3
---------
-4(1)+1
idontknow
if you get the dotted line
but its suppose to be like
a stright line under thoose numbers.
the straight line is a division sign one sec and ill figure out how to solve it
10/x+x=7 multiply times 10
x+x=70 add the xs
2x=70 divide
x=35 i think... its been a while
To solve equation (8) 10/x + x = 7, we need to find the value of x that satisfies the equation. Follow these steps to solve it:
1. Start by combining the terms on the left side of the equation:
10/x + x = 7
To combine fractions, we need a common denominator. The common denominator is x itself. Rewrite 10/x as 10x/x:
10x/x + x = 7
Simplify:
(10x + x^2)/x = 7
2. Multiply both sides of the equation by x to eliminate the fraction:
(10x + x^2)/x * x = 7 * x
Cancel out x on the left side and simplify the right side:
10x + x^2 = 7x
3. Rearrange the equation to bring all terms to one side and set it equal to zero:
x^2 - 3x = 0
4. Factor the equation:
x(x - 3) = 0
5. Set each factor equal to zero and solve for x:
x = 0 or x - 3 = 0
x = 0 or x = 3
Therefore, the solutions to equation (8) are x = 0 and x = 3.
To solve problem (15) s = (4 + 15/3) / (-4(1) + 1), follow these steps:
1. Simplify the expression inside the parentheses:
4 + 15/3 = 4 + 5 = 9
2. Simplify the expression outside the parentheses:
-4(1) + 1 = -4 + 1 = -3
3. Substitute the values back into the equation:
s = 9 / -3
4. Divide 9 by -3:
s = -3
Therefore, the value of s in problem (15) is -3.