algebra
2007-05-01 13:37:02 · 7 answers · asked by Mayra M 1 in Science & Mathematics ➔ Mathematics
7(10-3w)=5(15-4w)
70-21w=75-20w
-70
-21w=5-20w
+20w
-w=5
w= -5
2007-05-01 13:41:40 · answer #1 · answered by Cherriest 7 · 1⤊ 0⤋
7 (10 - 3w) = 5 (15 - 4w)
70 - 21w = 75 - 20w
w = -5
2007-05-01 13:41:20 · answer #2 · answered by John S 6 · 1⤊ 0⤋
7(10-3w)=5(15-4w)
70-21w=75-20w
-21w+20w=75-70
-w=5
w = -5
2007-05-01 13:40:44 · answer #3 · answered by jay gal 3 · 3⤊ 0⤋
w= -5
2007-05-01 13:42:45 · answer #4 · answered by R Wiz 1 · 1⤊ 0⤋
70-21w=75-20w
+20w +20w
70-1w=75
-70 -70
-1w=5
5/-1 = -5
2007-05-01 13:45:45 · answer #5 · answered by caitlin f 2 · 1⤊ 0⤋
7(10-3w)=5(15-4w)
70-21w=75-20w
-21w=5-20w
-w=5
w=-5
Check:
7(10-3(-5))=5(15-4(-5))
7(10+15)=5(15+20)
7(25)=5(35)
175=175
2007-05-01 13:47:47 · answer #6 · answered by Anonymous · 0⤊ 0⤋
70-21w=75-20w
70-21w+21w=75-20w+21w
70=75+w
70-75=75-75+w
w=-5
2007-05-01 13:42:42 · answer #7 · answered by Dave aka Spider Monkey 7 · 1⤊ 0⤋