2b + 3t = 80
b + t = 34
Equation 1 is in the correct format.
Equation 2 is in the correct format.
b + t = 34
b + t - t = 34 - t
b = 34 - t
2(b) + 3t = 80
2 * (34 - t) + 3t = 80
68 - 2t + 3t = 80
-2t + 3t = 80 - 68
1t = 12
1t | |
1 |
= |
12 |
1 |
t = | 12 |
1 |
t = 12
2b + 3(12) = 80
2b + 36 = 80
2b = 80 - 36
2b = 44
2b | |
2 |
= |
44 |
2 |
b = | 44 |
2 |
b = 22