Answer:
138
Step-by-step explanation:
According to PEMDAS (explains which operation you do first)
(Parentheses
Exponents
Multiplication or Division
Addition or Subtraction),
1. multiplication comes before addition
2. Even if it was 89+7x7, it would still be 7x7 first.
3. 7x7=49. Add it to 89 and you get 138
If in standard form you mean slope intercept form, then you are looking to create an equation that looks like this:
y = mx + b
So you need to move around the numbers whilst keeping both sides equivalent.
3x - 9 = 7y
7y = 3x - 9
y = (3x)/7 - 9/7
Your answer should look like this:
y = (3x)/7 - 9/7
If this is not what you meant by standard form please comment and I will see if I can adjust the answer.
So you need to add 6n with +2 then 5-7