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7 answers

90 + 3s = 4s + 76
90 - 76 = 4s - 3s
14 = s

2007-09-24 07:37:20 · answer #1 · answered by Como 7 · 0 0

3(30+s)=4(s+19)

*first we distribute the numbers outside the parenthesis to the numbers inside the parenthesis

3(30) + 3 (s) = 4 (s) + 4 (19)
90 + 3s = 4s + 76

*then we transpose 3s to the right side and 7g to the left side. remember that we should use the opposite sign when we transpose numbers. ( so + will be - )

90 - 76 = 4s - 3s

14 = s

*now to check, substitute s to 14

3(30 + 14) = 4(14 + 19)
3(44) = 4(33)
132 = 132 <--Yes they're equal! ^^.

2007-09-22 13:04:20 · answer #2 · answered by ZophiE 2 · 0 0

3(30 + s) = 4(s + 19)

90 + 3s = 4s + 76
-3s ; -76

14 = s

substitute 14

3(30 + 14) = 4(14 + 19)

132 = 132

the equations are equal and s = 14

2007-09-22 13:13:48 · answer #3 · answered by fzsbulldog07 2 · 0 0

3(30+s)=4(s+19)
or 90 + 3s = 4s+ 76
or 90-76=4s-3s
or 14 = s

2007-09-22 13:02:48 · answer #4 · answered by spring 1 · 0 0

3(30+s)=4(s+19)
90+3s=4s+76
3s-4s=76-90
-s=-14
s=14
Verify: 3(30+14)=4(14+19)
3(44)=4(33)
132=132
Solution s=14 is correct

2007-09-22 13:02:40 · answer #5 · answered by Grampedo 7 · 0 0

PEMDAS
parentheses
exponents
multiplication
division
addition
subtraction
in that order.
what is s equal to?
email me at jessiemarie2000@yahoo.com and i can help you i just need to know what s is
so you would do 30 + S and S + 19 first because they are in parentheses, then multiply 3 by whatever you got for 30+s and 4 by whatever you got for s+19 and i guess thas how you got the answer

2007-09-22 12:54:27 · answer #6 · answered by Life In Digital 3 · 0 0

distribute 3 to 30 and s and distribute 4 to s and 19
90+3s=4s+76 subtract 3s
90=s+76 subtract 76
14=s

2007-09-22 12:55:59 · answer #7 · answered by Anonymous · 0 0

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