Taking x = -4/9, y = 5/12 and z = 7/18, find: x + (y + z)

Solution:

It is given that

x = -4/9, y = 5/12 and z = 7/18

We know that

x + (y + z) = -4/9 + (5/12 + 7/18)

LCM of 12 and 18 is 36

= -4/9 + (5 × 3 + 7 × 2)/ 36

= -4/9 + (15 + 14)/36

= -4/9 + 29/36

By further calculation

= (-4 × 4 + 29)/ 36

= 13/36

Therefore, x + (y + z) is 13/36.

✦ Try This: Find a rational number exactly halfway between: 3/-17 and -7/9

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 9

NCERT Exemplar Class 7 Maths Chapter 8 Problem 94(i)

Taking x = -4/9, y = 5/12 and z = 7/18, find: x + (y + z)

Summary:

Taking x = -4/9, y = 5/12 and z = 7/18, x + (y + z) is 13/36

☛ Related Questions:

• Taking x = -4/9, y = 5/12 and z = 7/18, find: (x - y) + z
• Taking x = -4/9, y = 5/12 and z = 7/18, find: x ÷ (y ÷ z)
• Taking x = -4/9, y = 5/12 and z = 7/18, find: x - (y + z)