Question

Write the value of the vaiable for the following true ststments 1.2x+5.6x+=136

Answer 1

Answer:

6.8x=136

x=136/6.8

x=20

Answer 2

Given:

• equation: 1.2x+5.6x = 136

To Find:

• the value of the vaiable for the following true statements

Solution:

◐  here we have got an equation where the variable x represents the unknow value which makes the following statement true .

 ✦ so, let's find the unknown value by using transposition method

❖ Let's start:

$\longrightarrow \sf \: 1.2x + 5.6x = 136 \\ \\ \\ \longrightarrow \sf \: 6.8x = 136 \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \\ \longrightarrow \sf \: x = \cancel\frac{136}{6.8} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \\ \orange{\longrightarrow \sf x =20 \bigstar } \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

∴ the value of x is 20

$\rule{300}{2}$

Verification:

→ Now , let's verify it

In order to verify this we substitute the value of 20 in the place of x

${ : }\dashrightarrow \sf \: 1.2x + 5.6x = 136 \: \: \: \: \: \: \: \: \: \: \: \\ \\ \\ { : }\dashrightarrow \sf1.2(20) + 5.6(20) = 136 \\ \\ \\ { : }\dashrightarrow \sf24 + 112 = 136 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:\\ \\ \\ \pink{ { : }\dashrightarrow \sf \: 136 = 136 \bigstar} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

${ \huge{ \sf{ \underline{ \pink{ hence \: proved \dag}}}}}$