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Yanka [14]
3 years ago
5

MATH. Simplify x+7=2​

Mathematics
2 answers:
HACTEHA [7]3 years ago
8 0

Answer:

x=-5

Step-by-step explanation:

When finding x, we basically have to isolate the variable. By isolating the variable, usually doing the opposite operation helps it.

Addition is the opposite of Subtraction

Multiplication is the opposite of Division

Let's dive into this problem!

x+7=2

(we need to isolate x. basically we need to get rid of this 7. How do we do this? since it is added by seven, we can subtract it by both sides to get rid of it on the x side.)

x+7=2

  -7 -7

x=-5

(subtract 2-(-5), this adds to -5)

This is your final answer.

Verdich [7]3 years ago
4 0

Answer:

x=-5

Step-by-step explanation:

x+7=2    :    x=−5

Steps

$x+7=2$

x+7=2  

Subtract 7 from both sides

x+7-7=2-7

x+7−7=2−7

{Simplify}

Simplify

x=-5

x=−5

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Solution:

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2 years ago
Please help me with this math problem!
Mice21 [21]
W=x
L=2x+17

Double everything since we need to lengths and two widths to find the perimeter

2x+17+2x+17+x+x = 76
Combine like terms

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First step is subtract 34 from both sides

6x=42
Next you divide both sides by 6 in order to get x by itself

X=7

Now you plug in 7 into the x’s in length and width

W=7 cm
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THE WIDTH IS 31 CM

Check:

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A=1/2b(c+d) solve for c
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Answer:

c = \frac{2A}{b} - d

Step-by-step explanation:

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