Answer:
Step-by-step explanation:
T = x
S = 2x
J = 15
x + 2x + 15 = 63
3x = 63 - 15
3x = 48
x = 16
Tim has 16 marbles, Sue has 32 marbles and Jim has 15 marbles
Minutes x every minute of the day
I think
Answer:
41 and 77
Step-by-step explanation:
x: his age the first time he went to space
y: his age the second time he went to space
the second time he went to space he was 5 years younger than twice the age when he went his first time, then:
y = 2x - 5
the sum of both ages is 118, then:
x + y = 118
If you replace y = 2x - 5 in x + y =118:
x + 2x - 5 = 118
3x = 123
x = 41
replacing x:
41 + y = 118
y = 118 - 41
y = 77
so when he was 77, he was 5 years younger than twice 41 ( 41*2 = 82 => 82 - 5 =77)
3n - 5p + 2n = 10p
Since we are solving for n, you want to have all the terms containing the variable n on the left side of the equation and everything else on the right side.
Let's do this by adding 5p to both sides.
3n + 2n = 10p + 5p
Now combine like terms.
5n = 15p
Divide both sides by 5 since we are solving for the variable n.
n = 3p
