2007-01-21 16:09:32 · 11 answers · asked by Christ' Soldier 2 in Science & Mathematics ➔ Mathematics
4(7x + 10) = 3(9x – 5) + 20
28x+40=27x-15+20
28x+40=27x+5
x+40=5
x=-35
2007-01-21 16:13:17 · answer #1 · answered by Rachael 1 · 0⤊ 0⤋
Get rid of the brackets and Isolate for x
4(7x + 10) = 3(9x - 5) + 20
28x + 40 = 27x - 15 + 20
28x - 27x = -15 + 20 - 40
x = -35
2007-01-21 16:31:17 · answer #2 · answered by Donny Dutch 4 · 0⤊ 0⤋
4(7x + 10) = 3(9x - 5) + 20
28x + 40 = 27x - 15 + 20
28x + 40 = 27x + 5
x = -35
2007-01-21 16:17:56 · answer #3 · answered by Sherman81 6 · 0⤊ 0⤋
4(7x + 10) = 3(9x – 5) + 20
28x + 40 = 27x - 15 +20
28x + 40 = 27x + 5
28x - 27x = 5 - 40
x = -35
2007-01-21 16:17:05 · answer #4 · answered by ayie 2 · 0⤊ 0⤋
4(7x + 10) = 3(9x-5) + 20
28x + 40 = 27x - 15 + 20
28x + 40 = 27x + 5
x = - 35
You can double check that your answer is correct by plugging in the value for x into the original equation.
2007-01-21 16:16:36 · answer #5 · answered by Mud 2 · 0⤊ 0⤋
4(7x + 10) = 3(9x – 5) + 20
28x + 40 = 27x – 15 + 20
28x + 40 = 27x + 5
-27x
28x + 40 = 5
-27x
X + 40 = 5
-40
X = 5
-40
X = -35
2007-01-21 16:16:25 · answer #6 · answered by Anonymous · 0⤊ 0⤋
First: do away with parenthesis - use distribution > multiply the outer term with the words in parenthesis... 4(7x) + 4(10) = 3(9x) + 3(-5) + 20 28x + 40 = 27x - 15 + 20 28x + 40 = 27x + 5 Sec: integrate "like" words > subtract "40" from each and each section... 28x + 40 - 40 = 27x + 5 - 40 28x = 27x - 35 *Subtract "27x" from each and each section... 28x - 27x = 27x - 27x - 35 x = - 35
2016-11-26 01:25:07 · answer #7 · answered by ? 4 · 0⤊ 0⤋
First, just multiply to get rid of the parenthesis:
28X+40=27X-15+20
Subtract 27X from both sides:
X+40=5
Subtract 40 from both sides:
X= - 35
Proof:
7*-35= -245
9*-35= -315
4(-245+10)=3(-315-5)+20
4(-235)=3(-320)+20
-940 = -960 +20
-960 = -960
2007-01-21 16:32:29 · answer #8 · answered by LeAnne 7 · 0⤊ 0⤋
28x + 40 = 27x - 15 + 20
28x-27x = - 40 - 15 + 20
x = - 55 + 20
x = - 35
2007-01-22 07:25:36 · answer #9 · answered by Rudy T 1 · 0⤊ 0⤋
28x+40 = 27x - 15 +20
28x-27x=5 - 40
x = -35
2007-01-21 16:15:05 · answer #10 · answered by sugandha s 1 · 0⤊ 0⤋