l
10c + 3s = 82
5c + 8s = 67
Equation 1 is in the correct format.
Equation 2 is in the correct format.
5c + 8s = 67
5c + 8s - 8s = 67 - 8s
5c = 67 - 8s
5c | |
5 |
= |
67 - 8s |
5 |
c = | 67 - 8s |
5 |
10(c) + 3s = 82
10 * ((67 - 8s)/5) + 3s = 82
((670 - 80s)/5) + 3s = 82
5 * (((670 - 80s)/5) + 3s = 82)
5 * (((670 - 80s)/5) + 3s = 82)
670 - 80s + 15s = 410
-80s + 15s = 410 - 670
-65s = -260
-65s | |
-65 |
= |
-260 |
-65 |
s = | -260 |
-65 |
s = 4
10c + 3(4) = 82
10c + 12 = 82
10c = 82 - 12
10c = 70
10c | |
10 |
= |
70 |
10 |
c = | 70 |
10 |
c = 7
Math is always fascinating! Have you noticed? On the path to discovering the ultimate mysteries of math, we move forward with small steps.