Question

John has 15 more baseball cards than Michael. Together they have a total of 55 cards. How many cards does Michael have? Let M = the number of baseball cards Michael has.

Answer 1

let x= the number of baseball cards michael has
let 15+x= the number of baseball cards john has

Answer 2

welcome to openstudy :D M= J +15
M+J =55

Solve for J in the first equation
m= j +15
m- 15 = j

Substitute in second equation
m + (m-15) = 55
m + m-15=55
2m - 15 = 55
2m = 70
m=35
:D

In other words, Michael has 35 cards ^_^

Answer 3

if doing it with one variable you have x+x+15=55
and solve for x

Answer 4

but these are the answers listed look..


a ) M + (M + 15) = 55
b ) M + (M - 15) = 55
c )M - (M + 15) = 55
d )M - (M - 15) = 55

Answer 5

to give a medal for the best answer u see, just click on best response :D enjoy ur stay here, and if u need help on anything else, just PM me ^_^

Answer 6

It would be B :D Micheal has 35 cards, subsitute M for 35, and u will get 35 + (35 - 15) = 55, meaning 35 + (20) = 55, which is true :D

Answer 7

which is the answer a,b,c,d ?

Answer 8

it is B @q123456789 ^_^

Answer 9

x+x+15 = 55
2x+15=55
solve for x

Answer 10

x+x+15 = 55
so where can you but brackets and leave this statement true?