danielahumajova6
05.01.2021 •
Mathematics
2/3 (a-18)=-6
What is a?
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Ответ:
a=9
Step-by-step explanation:
2/3 (a-18)=-6
a−18=−6×( 3/2)
a−18=−6×3/2
a−18= −18/2
a−18=−9
a=−9+18
a=9
Ответ:
Q is at 2,-1
R is at 2, -2
S is at 0, -2