Question

Which equations are true equations? Select all correct answers. o 92 - 72 = 20 : (7-2) O 48 - 8 + 23 = 5 + 32 87 - 12 = 22 - 2-3 – 150 52 = 30 - 42 - 12 –

Answer 1

We will have the following:

*First expression:

$9^2-7^2=20/(7-2)\Rightarrow32\ne4$

*Second expression:

$48/8+2^3=5+3^2\Rightarrow14=14$

*Third expression:

$\frac{8\cdot7}{2}-12=22-2\cdot3\Rightarrow16=16$

*Fourth expression:

$\frac{150}{5^2}=30-4^2-12\Rightarrow6\ne2$