Answer:
1. 29
2. 24
3. 50
4. 69
Step-by-step explanation:
You can replace blank with x, and isolate x for each equation by moving the numbers on the same side of the x to the other side by subtracting them.
For example, for 1.
subtract 43 by both sides to move it to right
I don’t understand the question
Answer:
a = 87
Step-by-step explanation:
36+57=93
180-93=87