Answer:
x=-2
Step-by-step explanation:
25+6x=21+4x
Step 1: Simplify both sides of the equation.
6x+25=4x+21
Step 2: Subtract 4x from both sides.
6x+25−4x=4x+21−4x
2x+25=21
Step 3: Subtract 25 from both sides.
2x+25−25=21−25
2x=−4
Step 4: Divide both sides by 2.
x=−2
Answer:
B
Step-by-step explanation:
Given
+ 5 = 12 ( subtract 5 from both sides )
= 7 ( square both sides )
x - 6 = 49 ( add 6 to both sides )
x = 55
Answer:
x=9
Step-by-step explanation:
Since ABCD is a square, we know that AC bisects ∠BCD(=90), and therefore ∠ACB=45.
8x-27=45
8x=72
x=9
Ok So, 5+3=8x2=16-6=10 :)