Answer:
1. 2(-5)+(-3)(-7)
= -10+21
=11
2. (27)+(-9)-(3)(-2)
=27+(-9)-(-6)
=27-9+6
=24
3. 16+(42-2×3)-34
=16+(42-6)-34
=16+36-34
=18
4. 42÷7(39÷3-8)
=42÷7(13-8)
=6(5)
=30
5. 32+2(5(24-6))-48÷24
=32+2(5(18))-48÷24
=32+2(90)-48÷24
=32+180-2
=210
Explanation:
PEMDAS method.
hope this helps
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Answers & Comments
Answer:
1. 2(-5)+(-3)(-7)
= -10+21
=11
2. (27)+(-9)-(3)(-2)
=27+(-9)-(-6)
=27-9+6
=24
3. 16+(42-2×3)-34
=16+(42-6)-34
=16+36-34
=18
4. 42÷7(39÷3-8)
=42÷7(13-8)
=6(5)
=30
5. 32+2(5(24-6))-48÷24
=32+2(5(18))-48÷24
=32+2(90)-48÷24
=32+180-2
=210
Explanation:
PEMDAS method.
hope this helps