2007-10-23 04:35:22 · 10 answers · asked by maine161991getmoney 1 in Science & Mathematics ➔ Mathematics
[03]
r=10
7r+10=3r+50
7r+10-10=3r+50-10[subtracting 10 from both sides]
7r=3r+40
7r-3r=3r+40-3r[subtracting 3r from both sides]
4r=40
4r/4=40/4[dividing both sides by 4]
r=10
2007-10-23 04:39:09 · answer #1 · answered by alpha 7 · 0⤊ 1⤋
first step : Bring the +3r to the left side which becomes -3r and 10 to the right sidewhich also becomes -10.
7r+10 = 3r+50(given).
7r-3r = 50-10
4r = 40
r = 40/4 =10
therefore r = 10.
2007-10-23 04:50:22 · answer #2 · answered by NEO 2 · 0⤊ 0⤋
7r+10=3r+50
4r = 40
r = 10
2007-10-23 04:40:23 · answer #3 · answered by Ivan D 5 · 0⤊ 0⤋
7r+10=3r+50
7r-3r=50-10
4r=40
therefore, r= 40/4 (40 divided by 4) i.e. 10
2007-10-23 04:43:43 · answer #4 · answered by Pauli :) 6 · 0⤊ 0⤋
Equation: 7r+10=3r+50
Subtract 10 from both sides: 7r=3r+40
Subtract 3r from both sides: 4r=40
Divide each side by 4: r=10
2007-10-23 04:39:10 · answer #5 · answered by Anonymous · 0⤊ 0⤋
7r+10=3r+50
7r-3r=50-10
4r=40
r=40/4
r=10
2007-10-23 04:53:31 · answer #6 · answered by α∂ｿαѕнα тєנαѕωι 5 · 0⤊ 0⤋
7r+10=3r+50
7r-3r=50-10
4r=40
r = 40/4
r = 10
2007-10-23 04:41:00 · answer #7 · answered by Bhavin P 2 · 1⤊ 0⤋
You need to have your r terms on one side of the equals and your numbers on the other.
So subtract 3r from both sides
7r-3r+10=3r-3r+50 so
4r+10=50
Now subrtract ten on both sides
4r+10-10=50-10
4r=40
Once r terms are on one side and numbers on the other your can divide to find your answer.
4r/4=40/4
r=10
2007-10-23 04:40:02 · answer #8 · answered by Shaun B 3 · 0⤊ 0⤋
need to get rs and number on different sides, so take the 3r over to othe 7r, which makes it 4r then the 10 over to the 50, which makes 40
so...
4r=40
r=10
2007-10-23 04:38:30 · answer #9 · answered by Lauz 2 · 0⤊ 0⤋
4r = 40
r = 10
2007-10-23 11:00:14 · answer #10 · answered by Como 7 · 0⤊ 0⤋