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16-{15-[2(5+2)-4]+6}
Look for the innermost parentheses, (5+2)
Replace the (5+2) by (7). You cannot remove the ( ) because
they are needed to show the multiplication. Copy everything
else over:
16-{15-[2(7)-4]+6}
Look for the innermost parentheses [2(7)-4]
Multiplication comes before subtraction, so multiply the 2(7).
Replace the 2(7) by 14. Copy everything else over:
16-{15-[14-4]+6}
Look for the innermost parentheses: [14-4]
Replace [14-4] by [10], and then you can drop the [ ] and just
put 10 because there is just one number and it is not multiplied
by anything. Copy everything else over:
16-{15-10+6}
Look for the innermost (the only!) parentheses: {15-10+6}
There is a subtraction and an addition. Subtractions and additions
are done in the order of left to right. The subtraction comes first
going left to right. Replace 15-10 by 5. Copy everything else over:
16-{5+6}
Replace the {5+6} by {11}. and the you can drop the { } and just
put 11 because there is just one number and it is not multiplied
by anything.Copy eveything else over:
16-11
Replace that by
5
Edwin
