PLS HELPP 4x +4 - 3x=6 ?

Mathematics

2 answers:

maw [93]3 years ago

4 0

Answer:

Step-by-step explanation:

larisa86 [58]3 years ago

3 0

Answer: $2$

Step-by-step explanation:

Combine like terms: 4x + -3x = 1x:

$4 + 1x = 6$

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation:

$4 + -4 + 1x = 6 + -4$

Combine like terms: 4 + -4 = 0:

$0 + 1x = 6 + -4$

$1x = 6 + -4$

Combine like terms: 6 + -4 = 2:

$1x = 2$

Divide each side by '1':

$x = 2$

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Bill and Mary Ann went to the Viola bakery. Bill bought 5 pies and 7 donuts for $12.65. Mary Ann bought 6 of each for $12.30.

sweet [91]

Answer:

Pies=$0.85

Donuts= $1.20

Step-by-step explanation:

In the equation let p stand for the number of pies and d stand for the number of donuts.

To solve this set up 2 equations, one representing bill and the other representing Mary Ann.

Bill's equation is 5p+7d=$12.65.
Mary Ann's equation is 6p+6d=$12.30

Then solve using a system of equations. Systems of equations can be solved using elimination or substitution. I will use substitution. Solve bill's equation for p. This gives you $p=\frac{12.65-7d}{5}$ . Then, you can substitute that into Mary Ann's equation. This looks like $6\cdot \frac{12.65-7d}{5}+6d=12.3$ . Solve for d. Once you solve d=1.20. Finally, substitute 1.20 back into either Bill's or Mary Ann's for d and solve for p. No matter which equation you use p=0.85.