But addition comes substraction

Question

ScanSolve AI Tutor · Accepted Answer

You're right to ask for clarification! In the order of operations (BODMAS/PEMDAS), addition and subtraction have the same level of precedence. When you have both addition and subtraction in an expression, you perform them from left to right.

Let's re-examine the steps with this in mind:

Perform multiplication first.
$10 \times 2 = 20$
Substitute this back into the expression.
$50 - 20 + 5$
Now we have subtraction and addition.
Since they have equal precedence, we work from left to right. The first operation from the left is subtraction.
$50 - 20 = 30$
Finally, perform the addition.
$30 + 5 = 35$
If the expression were $50 + 5 - 20$ , we would do $50 + 5 = 55$ first, then $55 - 20 = 35$ . The order depends on which operation appears first from the left.

The final answer is 35.

But addition comes substraction

Answer

Step-by-step solution

Perform multiplication first.

Substitute this back into the expression.

Now we have subtraction and addition.

Finally, perform the addition.

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