3 years ago

Ernesto tried to determine the solution for the system of equations using substitution. His work is shown below.

Mathematics

2 answers:

Nikolay [14]3 years ago

7 0

Answer:

Its actually STEP 3

The person above is incorrect :/

defon3 years ago

4 0

The answer is step 3. Step 2 is suppose to be 3 x 7 and the answer is 21 but he writes 7 in step 4

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5 men take 45hours to build a wall.how long will it take 9men working at the same wall?

Karolina [17]

Answer:

25 hours

Step-by-step explanation:

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2 years ago

Solve the equation. y +3=y+9

scoray [572]

Answer:

No solution

Step-by-step explanation:

=> y+3 = y+9

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=> $y+3-y = y+9-y$

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So, This equation has no solution.

8 0

3 years ago