Answer:
x = 1/2
Step-by-step explanation:
6x - 8 + 4x = -6x
10x - 8 = -6x
16x = 8
x = 8/16
x = 1/2
Answer:
-7 or 4
Step-by-step explanation:
use foil to get the quadratic equation:
x^2+5x-2x-10=18
x^2+3x-10=18
bring "18" to the left:
x^2+3x-10-18
x^2+3x-28
so what*what= -28
and
what+what=3
factors of -28: -7,4 -4,7 14,-2 -14,2 -28,1 -1,28
factors whose sum is 3: 7,-4
so substitute "7,-4" in place of 3:
x^2+7x-4x-28
2) split it in two groups
group 1) x^2+7x
group 2) -4x-28
x^2+7x has a GCF of "x"
x(x+7)
group 2) -4x-28 has a gcf of "-4"
-4(x+7)
3) (x-4) (x+7)=0
x-4=0
x=4
x+7=0
x=-7
x=4,-7
Hope this helps!
Answer:
56x- 35y -60xy = 0
Step-by-step explanation:
1/2x+4/5y=6/7
5y + 8x/ 10xy = 6/7
7(5y + 8x)= 6 x 10xy
35y + 56x= 60xy
56x- 35y -60xy = 0
Answer:
c = d/a - b
General Formulas and Concepts:
<u>Pre-Algebra</u>
Step-by-step explanation:
<u>Step 1: Define</u>
a(c + b) = d
<u>Step 2: Solve for </u><em><u>c</u></em>
- Divide <em>a</em> on both sides: c + b = d/a
- Subtract <em>b</em> on both sides; c = d/a - b
