Answer:
x=2/5
Step-by-step explanation:
7x+8=12-3x
7x=12-3x-8
7x=-3x+4
7x+3x=4
10x=4
x=4/10
x=2/5
PEMDAS
Parentheses - Exponents - Multiplication/Division - Addition/Subtraction
12 - (2 x 3)
2 x 3 = 6
12 - 6 = 6
Answer: 144
Step-by-step explanation:
Answer:
4x2-7
Step-by-step explanation:
4(x2+2)-1=4x2+8-1=4x2=7