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3 years ago

2x - 8 = 6help please

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

8 0

Answer:

2x -8 =6

add 8 to -8 and 6.

the 8s cancel each other out and 6 +8 =14.

next you are going to divide 2x diveded by 2 and 14 by 2. the twos cancel out so its just x and then 14/2 is 7.

the answer is 7. hope this helps dude.

sineoko [7]3 years ago

7 0

Answer:

Step-by-step explanation:

Move the -8 to the other side and use the rule change side change sign:

2x=6+8

2x=14

Move the 2 and convert the multiplication(as its 2×x ) into division:

x= 14÷2

x=7

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$(x + y) - (x - y) =2y$

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Step-by-step explanation:

Solving (a):

Given

$(x + y) - (x - y)$

Required

Simplify

$(x + y) - (x - y)$

Open brackets

$(x + y) - (x - y) = x + y - x + y$

Collect Like Terms

$(x + y) - (x - y) = x - x+ y + y$

$(x + y) - (x - y) = y + y$

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Solving (b):

Given

$3y + 5y^3$ and $8y^4$

Required

Which expression shows they are not the same

The expression that shows this is:

$3y + 5y^3 \ne 8y^4$

Take for instance; y=2

Substitute 2 for y in $3y + 5y^3 \ne 8y^4$

$3*2 + 5*2^3 \ne 8*2^4$

Evaluate all exponents

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3 years ago

2x - 8 = 6help please ​

2x - 8 = 6help please