3 years ago

7a+4b-2c if a=8,b=2 and c=17

2 answers:

Volgvan3 years ago

6 0

Answer: 30

Explanation:

7a+4b-2c
First replace the variable and put in parentheses:
7(8)+4(2)-2(17)
When you see a number next to a parentheses, you multiply:
7(8)+4(2)-2(17)
56 + 8 - 34
Then you add first, and then subtract last:
55+8-34
64-34= 30
REMEMBER to use PEMDAS

cestrela7 [59]3 years ago

5 0

The answer is 30
7(8)+4(2)-2(17)=30

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