2x + 4(x - 1) = 2 + 4x
2x + 4x - 4 = 2 + 4x
6x - 4 = 2 + 4x
6x - 4x = 2 + 4
2x = 6
x = 3........there is 1 solution
25 - x = 15 - (3x + 10)
25 - x = 15 - 3x - 10
25 - x = -3x + 5
3x - x = 5 - 25
2x = - 20
x = -20/2
x = -10.....there is 1 solution
4x = 2x + 2x + 5(x - x)
4x = 4x + 5x - 5x
4x = 4x......this has infinite solutions
learn this...
if ur equation ends in a variable equaling a number, then there is one solution.
if ur equation ends in something not equal, like 2 = 4, or 4 = 6, then there is 0 solutions.
if ur equation ends in something equal to something,(the same) like 2 = 2, or 4x = 4x, then there is infinite solutions
Answer:
i will do it
Step-by-step explanation:
Answer:
x + 3 + 45° = 180°. isosceles triangle
x = 180° - 45°-3°
x = 132°
90° + x = 180°
x =180° - 90°
x = 90°
It is the origin of a graph; where the x-axis and y-axis intercept .
Answer:
-5(y+7)
Step-by-step explanation:
Well, the numbers you can divide 5 with are 1 and 5.
35 divides both with 1 and 5 too, but since 5 is the greatest, you choose 5.
so,
you divide both with -5, since both are negative.
-5y/-5 = y
-35/-5 = 7
so,
-5(y+7)
check:
-5*y = -5y
-5*7 = -35
so,
-5y-35, that's true.
