$\dfrac{2m}{5}+3=7(4m-3)\ \ \ \ |use\ distributive\ property:a(b-c)=ab-ac\\\\\dfrac{2m}{5}+3=28m-21\ \ \ \ \ |multiply\ both\ sides\ by\ 5\\\\2m+15=140m-105\ \ \ \ |subtract\ 140m\ from\ both\ sides\\\\-138m+15=-105\ \ \ \ |subtract\ 15\ from\ both\ sides\\\\-138m=-120\ \ \ \ |divide\ both\ sides\ by\ (-138)\\\\m=\dfrac{120:6}{138:6}\\\\\boxed{m=\frac{20}{23}}$

7 0

2 years ago

Simplify (-2)(-3)^2-2(2 - 5) <br><br>39 -12 -24

daser333 [38]

Answer:

-12

Step-by-step explanation:

(-2)(-3)^2-2(2-5). Original

-2(9)-2(2-5) Distribute Exponents

-18-4+10 Distribute Parentheses

-22+10 Do subtraction

-12 Do Addition

4 0

2 years ago

Read 2 more answers

Ali has 41 miles remaining after 32 minutes of driving how many miles over remaining after 40 minutes of driving with the slope

algol [13]

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8 0

2 years ago

determine if it can be proven that the triangles are congruent if they are the choose a theorem that proves its congruent

Lostsunrise [7]

Answer:

These triangles are congruent by SAS

Step-by-step explanation:

They share the same angle which is in the same angle which is the vertical angle with congruent sides on either side of the angle, therefore this is congruent by SAS.

7 0

2 years ago