1) 2x - 4 = -2x + 12
2) 56 + 3y = 7y - 24
3) 18y - 7 = 5y + 19
4) 11z - 5 = 3z + 35
5) 5x + 7 = 3x + 21
2006-10-20 05:50:11 · 7 answers · asked by cak 1 in Science & Mathematics ➔ Mathematics
1) 2x - 4 = -2x + 12
2x + 2x = 12 + 4
4x = 16, x = 4
2) 56 + 3y = 7y - 24
56 + 24 = 7y - 3y
80 = 4y
y = 20
3) 18y - 7 = 5y + 19
18y - 5y = 19 + 7
13y = 26
y = 2
4) 11z - 5 = 3z + 35
11z - 3z = 35 + 5
8z = 40
z = 5
5) 5x + 7 = 3x + 21
5x - 3x = 21 - 7
2x = 14
x = 7
2006-10-20 05:55:02 · answer #1 · answered by rchlbsxy2 5 · 0⤊ 0⤋
1) x=4
2) y=20
3) y=2
4) z=5
5) x=7
2006-10-20 05:56:41 · answer #2 · answered by Ahmet T 2 · 0⤊ 0⤋
1. x=4
2. y=20
3. y=2
4. 4.4 or 4 4/9
5. x=7
2006-10-20 05:57:30 · answer #3 · answered by Anonymous · 0⤊ 0⤋
1) 4
2) 8
3) 2
4) 5
5) 14
2006-10-20 05:55:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋
a million) 2x - 5 = -3x +10 2x - 5 + 5 = -3x + 10 +5 2x = -3x +15 2x +3x = -3x +15 +3x 5x = 15 5x/5 = 15/5 x = 3 2) 4x +10 = 2(2x +5) 4x +10 = 4x +10 4x +10 -10 = 4x +10 -10 4x = 4x +0 4x -4x =4x +0 -4x 0=0
2016-12-05 01:11:36 · answer #5 · answered by ? 4 · 0⤊ 0⤋
1) Add 2x + 4 to both sides to get:
4x = 16
Thus, x = 4.
2) Add 24 - 3y to both sides to get:
80 = 4y
Thus, y = 20.
3) Add -5y + 7 to both sides to get:
13y = 26
Thus, y = 2.
4) Add -3z+5 to both sides to get:
8z = 40
Thus, z = 5.
5) Add -3x - 7 to both sides to get:
2x = 14
Thus, x = 7.
2006-10-20 05:55:14 · answer #6 · answered by Ted 4 · 0⤊ 0⤋
is this your math homework? DO IT YOURSELF!
2006-10-20 05:57:33 · answer #7 · answered by Anonymous · 0⤊ 0⤋