vladutraileanu7599
29.04.2021 •
Mathematics
Expre
If a +b+c= -3 and 2 + y = -9,
what is --2c – 2a – 3y - 26 – 3x?
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Ответ:
33
Step-by-step explanation:
Rewrite the bottom expression:
-2a-2b-2c-3x-3y
Factor the expression into two parts:
-2(a+b+c) + -3(x+y)
Substitute -3 for a+b+c and -9 for x+y:
-2(-3) + -3(-9)
6 + 27
33
Therefore, your final answer is 33
Ответ:
X=4
Step-by-step explanation:
Simplifying
8x + 7 = 6x + 15
Reorder the terms:
7 + 8x = 6x + 15
Reorder the terms:
7 + 8x = 15 + 6x
Solving
7 + 8x = 15 + 6x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-6x' to each side of the equation.
7 + 8x + -6x = 15 + 6x + -6x
Combine like terms: 8x + -6x = 2x
7 + 2x = 15 + 6x + -6x
Combine like terms: 6x + -6x = 0
7 + 2x = 15 + 0
7 + 2x = 15
Add '-7' to each side of the equation.
7 + -7 + 2x = 15 + -7
Combine like terms: 7 + -7 = 0
0 + 2x = 15 + -7
2x = 15 + -7
Combine like terms: 15 + -7 = 8
2x = 8
Divide each side by '2'.
x = 4
Simplifying. Hope this helps :D
x = 4. Plz and like