First, we substitute the value of a+b into the equation:
3(28a+b) - 73a + 8b= 3(28(a+b)) - 73(a+b)
= 84(a + b) - 73(a + b)
Now, substitute the value of a+b = 7 into the equation:
= 84(7) - 73(7)= 588 - 511= 77
Therefore, the solution is 77.
First, we substitute the value of a+b into the equation:
3(28a+b) - 73a + 8b
= 3(28(a+b)) - 73(a+b)
= 84(a + b) - 73(a + b)
Now, substitute the value of a+b = 7 into the equation:
= 84(7) - 73(7)
= 588 - 511
= 77
Therefore, the solution is 77.