please help me, i need it so badly im dying.
2007-09-05 12:34:02 · 6 answers · asked by t92vt 1 in Science & Mathematics ➔ Mathematics
12x - 20 = 10x + 20
2x = 40
x = 20
2007-09-09 11:16:51 · answer #1 · answered by Como 7 · 0⤊ 0⤋
Multiply to eliminate the brackets
12x -20 = 10x +20
Then combine like terms and solve
12x - 10x = 20 +20
2x = 40
x = 40/2
x = 20
2007-09-05 12:39:47 · answer #2 · answered by Math teacher 2 · 0⤊ 0⤋
First you have to factor it out.
Then match like terms.
Then divide by 2
4*3x - 4*5 = 5*2x + 5*4
12x - 20 = 10x + 20
12x - 10x - 20 + 20 = 10x - 10x + 20 + 20
2x = 40
2x / 2 = 40 / 2
x = 20
Hope this helps.
2007-09-05 12:41:01 · answer #3 · answered by c_greiff 3 · 0⤊ 0⤋
4(3x-5) = 5(2x +4)
12x - 20 = 10x + 20
2x = 40
x = 20
2007-09-05 12:41:51 · answer #4 · answered by robertonereo 4 · 0⤊ 0⤋
distribute
12x-20 = 10x+20
2x = 40
x = 20
2007-09-05 12:37:57 · answer #5 · answered by bobo 3 · 0⤊ 0⤋
12x-20=10x+20
2x=40
x=20
2007-09-05 12:37:59 · answer #6 · answered by Cameron C. 4 · 0⤊ 0⤋