Answer:
<u>x = -7</u>
Step-by-step explanation:
Add 4 to both sides:
7x - 4 + 4 = 3 + 8x + 4
Simplify (The 4's cancel out)
7x = 8x + 7
Subtract 8x from both sides (The 8's cancel out)
7x - 8x = 8x + 7 -8x
Simplify:
-x = 7
Divide both sides by -1
-x/-1 = 7/-1
Simplify:
x = -7
Hope this helps!
<em>when we solve the equation it will become
x</em>² + 9x<em>= 0
now here a = 1 , b = 9 and c = 0
by using quaderatic formula
x = -b +,-</em>√<em>b </em>²<em>- 4ac / 2a ( 2a is divided by all terms )
by putting values
x = - 9 +,</em><em>- </em>√<em>81 / 2(1) ( </em>√<em>81 = 9)</em><em>
x = -9 + 9 / 2 and x = -9 -9 /2
x = 0 and x = -18 /2 = -9
now there are two values for x one is- 9 and other is 0
so we put -9 as the value of x then answer will be zero..</em>
0,6(y + 3)= 4,8
6y + 18 =48
6y = 30
y = 5
All of them would be correct except for the third option, Angle BCA is not equivalent to Angle DCE.