What is the answer to 3m+7=4.2m+5 ?

The answer to 3m+7=4.2m+5 is m= 5/3

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

3m+7=4.2m+5

3 m + 7 = 4.2 m + 5

m = \frac{5}{3}

Decimal Notation

m = 1.66666 \dots

Solution steps

3 m + 7 = 4.2 m + 5

Multiply both sides by

10

30 m + 70 = 42 m + 50

Move

70

to the right side

30 m = 42 m - 20

Move

42 m

to the left side

- 12 m = - 20

Divide both sides by

- 12

m = \frac{5}{3}

y, - 5 x + 7 y = 8 x + 7

- 3 x + 7 = - 8 x + 47 - 8 x + 47

t, 3.5 s - 42 = 14 t

2 (z - 5) = 3 - (4 + z)

d, fd - m = 8