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What is r in this equation and how do you do it minus 5 equals 7 plus 3r?
Wiki User
∙ 9y ago
-5 = 7 + 3r | subtract 7
-12 = 3r | divide by 3
-4 = r
Wiki User
∙ 9y ago
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Solve the system of equations 3r -4s equals 0 and 2r plus 5s equals 23?
Presumably this is a simultaneous equation in the form of: 3r-4s = 0 2r+5s = 23 Multiply all the terms in the top equation by 2 and in the bottom equation by 3: 6r-8s = 0 6r+15s = 69 Subtract the bottom equation from the top equation: -23s = -69 Divide both sides by -23 to find the value of s remembering that a minus number divided into a minus number is equal to a plus number: s = 3 Substitute the value of s into the original equations to find the value of r: Therefore: r = 4 and s = 3
Can r plus 2r - 3r be simplified?
5
What is the answer for this math algebra problem 3r-2 for r equals 65?
3r-2 for r=65
What is an equivalent expression to (3r) plus (ar) plus (4r)?
It is (7 + a)r.
What is -5r plus 8r plus 5?
-5r + 8r + 5 = 3r +5
How do you factor 9r squared minus 12r plus 4?
(3r - 2)(3r - 2) or (3r - 2) squared.
Solve the system of equations 3r -4s equals 0 and 2r plus 5s equals 23?
Presumably this is a simultaneous equation in the form of: 3r-4s = 0 2r+5s = 23 Multiply all the terms in the top equation by 2 and in the bottom equation by 3: 6r-8s = 0 6r+15s = 69 Subtract the bottom equation from the top equation: -23s = -69 Divide both sides by -23 to find the value of s remembering that a minus number divided into a minus number is equal to a plus number: s = 3 Substitute the value of s into the original equations to find the value of r: Therefore: r = 4 and s = 3
How do you Factor 3r squared equals 13r plus 10?
(3r + 2)(r - 5)
What is -5 equals 7 plus 3r?
If: -5 = 7+3r then the value of r works out as -4
What is 32 plus 3r equals 82-2r?
A math problem
What is the answer to 3r plus 3r plus 2t?
3r + 3r + 2t = 6r + 2t
What is the answer of 9r equals 3r plus 6?
9r = 3r + 6 subtract 3r from both sides 6r = 6 divide both sides by 6 r=1 ■
How do you solve the equation 17 equals 13-3r?
17 = 13 - 3r Subtract 13 from bith sides: 4 = -3r Divide both sides by -3 : -4/3 = r or r = -1.3...
What is 3r-r equals 12?
3r-r equals 12 = -9
R plus 3 plus 2r equals - 21?
r+3+2r=21 to solver this equation you have to first simplify then solve. you have to combine same variables. 3r+3=21 -3 -3 you subtract three to get r by itself (3r=18)/3 you divide by three to get r by itself Answer r=6
How do you work out the problem 9r equals 3r plus 6?
9r = 3r+6 Subtract 3r from both sides: 6r = 6 Divide both sides by 6 to find the value of r: r = 1
Can r plus 2r - 3r be simplified?
5
