Respuesta :
Answer:35
Simplifying
5(x + 20) = 7x + 30
Reorder the terms:
5(20 + x) = 7x + 30
(20 * 5 + x * 5) = 7x + 30
(100 + 5x) = 7x + 30
Reorder the terms:
100 + 5x = 30 + 7x
Solving
100 + 5x = 30 + 7x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7x' to each side of the equation.
100 + 5x + -7x = 30 + 7x + -7x
Combine like terms: 5x + -7x = -2x
100 + -2x = 30 + 7x + -7x
Combine like terms: 7x + -7x = 0
100 + -2x = 30 + 0
100 + -2x = 30
Add '-100' to each side of the equation.
100 + -100 + -2x = 30 + -100
Combine like terms: 100 + -100 = 0
0 + -2x = 30 + -100
-2x = 30 + -100
Combine like terms: 30 + -100 = -70
-2x = -70
Divide each side by '-2'.
x = 35
Simplifying
x = 35
Hope it helps. Please tell me if im correct
Answer:
35
Step-by-step explanation:
5 * X= 5x
5* 20=100
these are for the ones inside the pararenthesis
so....
5x + 100= 7x+30
subtract 30 from both sides
5x+100-30= 7x-30-30
5x+70= 7x
now we need the variable on one side
so we subtract 5x on both sides
5x-5x+70= 7x-5x
70= 2x
now we divide by 2 on both to isolate the variable
70/2= 2/2
35=x
that's ur answer
hope this helped :D