Answer:
A
Step-by-step explanation:
x=1.4
x + 4.3 = 5.7
x = 5.7 - 4.3
x = 1.4
Answer:

Step-by-step explanation:
1) use this rule:
× 

2) simplify 4 * 2 to 8

3) simplify 5 * 3 to 15

Answer:
I have provided an explanation on the attached picture. Good Luck.