Step-by-step explanation:
doing whole question
12+7=23⋅−6
12+7=23⋅−6
12+7=23⋅−6
2+7=23⋅−6
2+7=23−6
2+7=23−6
2+7=23−6
2+7−7=23−6−7
Subtract the numbers
2=23−13
2=23−13
2⋅3⋅2=2⋅3(23−13)
Cancel multiplied terms that are in the denominator
Multiply the numbers
Distribute
Combine multiplied terms into a single fraction
Multiply the numbers
Cancel terms that are in both the numerator and denominator
3=4−78
4
4x4x
from both sides of the equation
3=4−78
3x=4x-783x=4x−78
3−4=4−78−4
Combine like terms
−=−78
−=−78
-x=-78−x=−78
−−1=−78−1
Cancel terms that are in both the numerator and denominator
Divide the numbers
=78
