Question

ambele ex va rog repede​

Answer 1

Ex 7:

$a)397 + 42 \times m = 859$

$42 \times m = 859 - 397$

$42 \times m = 462$

$x = 462 \div 42 = 11$

$b)947 - 124 \div n = 943$

$124 \div n = 974 - 943$

$124 \div n = 31$

$n = 124 \div 31 = 4$

$c)40 \times p - 500 = 300$

$40 \times p = 300 + 500 = 800$

$p = 800 \div 40 = 20$

Ex 8

$360 - (2 \times a + 64) = 278$

$2 \times a + 64 = 360 - 278 = 82$

$2 \times a = 82 - 64 = 18$

$a = 18 \div 2 = 9$

Sper ca ți am fost de folos!