Question

Solve the following equations. Check your answer.
a. x/3=4
b. -10=y/5
c. 2/3a=-8
d. 21=3c
e. 18+k=7
f. p-5 1/4= 3 1/4
g. 2.3=n-1.7
h. x+10=12.5​

Answer 1

a . x/3 = 4

x = 3×4

x = 12

b. y = – 10 × 5

y = – 50

Hope it's help you

Answer 2

Answer:

a.

$\frac{x}{3} = 4 \\ \\ x = 4 \times 3 \\ \\ x = 12$

b.

$- 10 = \frac{y}{5} \\ \\ - 10 \times 5 = y \\ - 50 = y$

c.

$\: .\: \: \: \: \: \frac{2}{3a} = - 8 \\ \\ 2 = - 8 \times 3a \\ \\ \frac{2}{ - 8} = 3a \\ \\ \frac{1}{ - 4} = 3a \\ \\ 1 = 3a \times - 4 \\ - 4 = 3a \\ \frac{ - 4}{3} = a$

d.

$21 = 3c \\ \\ \frac{21}{3} = c \\ \\ 7 = c$