carleebea55
carleebea55 carleebea55
  • 03-09-2021
  • Mathematics
contestada

PLS help
evaluate. step by step answer please !!
7+7a+1-10a when a=4

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RuneVariel
RuneVariel RuneVariel
  • 03-09-2021
Okay so the problem is really 7+7(4)+1-10(4) as the a is really 4.
In the order of PENDAS you do the parentheses first. Parentheses mean that you times the inside number by the outside number that is touching the parentheses.
So 7 times 4 is 28 and -10 times 4 is -40
So now the equation is 7+28+1-40
7+28 is 35 and 1-40 is -39
35-39 is -4 so -4 should be the answer sorry if I’m wrong or messed up.
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